Smog monitor readiness questions on 2015 VW GTI MK7

[geyungjen]

My 2015 GTI smog readiness from OBD2 scanner: 6 out of 9 ready, 3 not ready. Following are the not ready monitors:

Catalyst
Fuel
Oxygen

I have driven since reset about 30 miles, on highway and locals, still show stubbornly in OBD scanner as not ready, there us no code after scanning.

How long I should drive the car in terms of miles to get the above 3 monitors ready?

Thanks alot for your insight

 

[Santos]

Is the car chipped or stock? Any intermittent codes?

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[geyungjen]

Thanks for the reply, there is no code.

ECU is stock ECU, never flashed after factory



There is no engine code, did a scan just now:

Wednesday,02,September,2026,14:14:19:39693
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 26.9.0.3 (x64)  HEX-V2 CB: 0.4713.5
Data version: 20260828 DS378.0
www.Ross-Tech.com


VIN: 3VW5T7AU7FM001611   License Plate: 



--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


Readiness Status: 0010 0001
Exhaust Gas Recirculation: Passed
Oxygen Sensor Heating: Passed
Oxygen Sensor(s): Failed or Incomplete
Air Conditioning: Passed
Secondary Air Injection: Passed
Evaporative Emissions: Passed
Catalyst Heating: Passed
Catalytic Converter(s): Failed or Incomplete



--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


Chassis Type: AU-VW37 (5Q0)
Scan: 01 03 05 08 09 15 16 17 19 2B 42 44 47 52 5F 75 A9

VIN: 3VW5T7AU7FM001611   Mileage: 126616km-78675miles

01-Engine -- Status: OK 0000
03-ABS Brakes -- Status: OK 0000
05-Acc/Start Auth. -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: Malfunction 0010
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
2B-Steer. Col. Lock -- Status: OK 0000
42-Door Elect, Driver -- Status: Malfunction 0010
44-Steering Assist -- Status: OK 0000
47-Sound System -- Status: Malfunction 0010
52-Door Elect, Pass. -- Status: Malfunction 0010
5F-Information Electr. -- Status: Malfunction 0010
75-Telematics -- Status: OK 0000
A9-Struct. Borne Sound -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine (J623-CNTA)       Labels:. 06K-907-425-V1.clb
   Part No SW: 5G0 906 259 A    HW: 06K 907 425 B
   Component: 2.0l R4 TFSI  H13 0003  
   Revision: --H13---    CVN: EAF4D4C7
   Coding: 091900122424000F1000
   Shop #: WSC 00066 790 00202
   ASAM Dataset: EV_ECM20TFS0205G0906259A 001005
   ROD: EV_ECM20TFS0205G0906259A.rod
   VCID: 2C06DBD0768287BA6B8-8078
   VINID: 0E69C59074651D67400011810492F0F4C9

No fault code found.
Readiness: 0010 0001

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels: 5Q0-907-379-ESP-V1.clb
   Part No SW: 5Q0 907 379 K    HW: 5Q0 907 379 F
   Component: ESC           H31 0371  
   Revision: 00000000    Serial number: 50464000000163
   Coding: 01FA6BA13420096D007D020181C42980D62C9000408194B400430050C009
   Shop #: WSC 01383 790 50316
   ASAM Dataset: EV_Brake1UDSContiMK100ESP 033001
   ROD: EV_Brake1UDSContiMK100ESP_033_VW37.rod
   VCID: 44D69370FE126FFA838-8010

No fault code found.

-------------------------------------------------------------------------------
Address 05: Acc/Start Auth. (J518)       Labels:| 5Q0-959-435.clb
   Part No SW: 5Q0 959 435 A    HW: 5Q0 959 435 
   Component: VWKESSYMQB    021 0604  
   Revision: 00021000    Serial number: 0327221216 Dataset Number: V03935197ZB 0001
   Coding: 030C0C
   Shop #: WSC 01383 790 50316
   ASAM Dataset: EV_KessyHellaMQBAB 002011
   ROD: EV_KessyHellaMQBAB_002.rod
   VCID: 3A2AED888CD6290AE94-806E

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC (J301)       Labels:| 5G0-907-426.clb
   Part No SW: 5G0 907 426 N    HW: 5G0 907 426 N
   Component: AC Manuell    H01 0705  
   Revision: 00001K06    
   Coding: 00020004200100000000000000000000
   Shop #: WSC 01383 790 50316
   ASAM Dataset: EV_ACManueBHBVW37X 003019
   ROD: EV_ACManueBHBVW37X_003_VW37.rod
   VCID: 3632F9B8B8CECD6A0DC-8062

   Fresh air blower control module (front): 

   A/C pressure/coolant temperature sensor: 

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:| 5Q0-937-08X-MV1.clb
   Part No SW: 5Q0 937 087 K    HW: 5Q0 937 087 K
   Component: BCM PQ37BOSCH 026 0097  
   Revision: --------    Serial number: 86581902140054 Dataset Number: 5GM063v____ 
   Coding: 001108464041826969E44000001407201800000000000000000000000000
   Shop #: WSC 131071 1023 2097151
   ASAM Dataset: EV_BodyContrModul1UDSBosc 012003
   ROD: EV_BCMBOSCH_012.rod
   VCID: 43D4906CFB1C68C2BA2-8016

   Wiper motor control module: 
   Subsystem 1 - Part No SW: 5GM 955 119     HW: 5GM 955 119   Labels: 5QX-955-119-V1.CLB
   Component: WWS    140109  042 0581 
   Serial number:         140320065008
   Coding: 0E4DDD

   Rain/Light Recognition Sensor: 
   Subsystem 2 - Part No SW: 5Q0 955 559     HW: 5Q0 955 559   Labels: 5Q0-955-547.CLB
   Component: RLS  024 0042 
   Serial number: Y14M01D30H06M26S20S8
   Coding: 00A8DD

   Sunroof control module: 
   Subsystem 3 - Part No SW: 8V3 959 591     HW: 8V3 959 591 
   Component: J245 PS73.013  H02 0007 
   Serial number:     WOO2641420-     
   Coding: 181801

3 Faults Found:
18186 - Bulb for Rear Left Side Marker Lamp 
          B12BC 15 [00001001] - Open or Short to Plus
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 194
                    Mileage: 126572 km
                    Date: 2026.07.20
                    Time: 14:02:36

                    Terminal 15 status: On
                    Terminal 50 status: OFF
                    CAN-Bus_aktiv: On
                    Status Bremslichtschalter (HW): OFF
                    Status Bremslichtschalter (CAN): OFF
                    OFF: Not operated
                    Position lamps: Not operated
                    Automatic high beam assist: operated
                    Low beams: Not operated
                    Parking light left: Not operated
                    Parking light right: Not operated
                    last_wakeup: Pin C14 Kessy Weckleitung
                    Voltage: 13.8 V
                    Outside temperature: 17.0 ∞C

204546 - Remote key 2 
          B147A 18 [00001000] - Current Too Low
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 4
                    Fault Frequency: 1
                    Reset counter: 234
                    Mileage: 126562 km
                    Date: 2026.07.14
                    Time: 07:28:23

                    Terminal 15 status: OFF
                    Terminal 50 status: OFF
                    CAN-Bus_aktiv: On
                    Status Bremslichtschalter (HW): OFF
                    Status Bremslichtschalter (CAN): OFF
                    OFF: operated
                    Position lamps: Not operated
                    Automatic high beam assist: Not operated
                    Low beams: Not operated
                    Parking light left: Not operated
                    Parking light right: Not operated
                    last_wakeup: g¸ltiges Funktelegramm
                    Voltage: 12.0 V
                    Outside temperature: 28.5 ∞C

329480 - Heated Passenger Seat 
          B1806 F0 [00001000] - Safety Shut-Off due to Occupant Detection
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 6
                    Fault Frequency: 3
                    Reset counter: 235
                    Mileage: 126523 km
                    Date: 2026.07.07
                    Time: 02:33:14

                    Terminal 15 status: OFF
                    Terminal 50 status: OFF
                    CAN-Bus_aktiv: On
                    Status Bremslichtschalter (HW): OFF
                    Status Bremslichtschalter (CAN): OFF
                    OFF: operated
                    Position lamps: Not operated
                    Automatic high beam assist: Not operated
                    Low beams: Not operated
                    Parking light left: Not operated
                    Parking light right: Not operated
                    last_wakeup: no cause for fault protection
                    Voltage: 12.3 V
                    Outside temperature: 22.0 ∞C


-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:| 5Q0-959-655.clb
   Part No SW: 5Q0 959 655 T    HW: 5Q0 959 655 T
   Component: AirbagVW20    009 0825  
   Serial number: 003MHM00BH6C Dataset Number: 5GM003V____ 0031
   Coding: 8CCCFC00000000005000001AC24800000065
   Shop #: WSC 131071 1023 2097151
   ASAM Dataset: EV_AirbaVW20SMEVW37X 002138
   ROD: EV_AirbaVW20SMEVW37X_VW37.rod
   VCID: 51F8AA2431608A5238E-8004

   Seat occupant detection passenger side: 
   Subsystem 1 - Part No SW: 4M0 959 339 A    HW: 4M0 959 339 A
   Component: BF-Gewichtss.  005 0016 
   Serial number: IBH0000J140000GI660U
   Coding: 303136

   Crash sensor for side airbag: driver side: 
   Subsystem 2 - Part No SW: -----------    HW: 480 002 501 14
   Component: SideSensor_Df  001 0887 
   Serial number: 35700000000C5A1DBE0 
   Coding: 2D2D2D

   Crash sensor for side airbag: passenger side: 
   Subsystem 3 - Part No SW: -----------    HW: 480 002 711 13
   Component: SideSensor_Pf  001 0887 
   Serial number: 358000000002C1605E0D
   Coding: 2D2D2D

   Crash sensor for side airbag: driver side rear: 
   Subsystem 4 - Part No SW: -----------    HW: 480 402 501 14
   Component: SideSensor_Dr  001 6149 
   Serial number: 3510002C712FAE23E3EM
   Coding: 2D2D2D

   Crash sensor for side airbag: passenger side rear: 
   Subsystem 5 - Part No SW: -----------    HW: 480 402 501 14
   Component: SideSensor_Pr  001 6149 
   Serial number: 3520002AF12FAE2141CD
   Coding: 2D2D2D

   Crash sensor for front airbag: driver side: 
   Subsystem 6 - Part No SW: -----------    HW: 480 400 201 14
   Component: FrontSensor_D  001 6149 
   Serial number: 3550002C712FAE355328
   Coding: 2D2D2D

   Crash sensor for front airbag: passenger side: 
   Subsystem 7 - Part No SW: -----------    HW: 480 400 201 14
   Component: FrontSensor_P  001 6149 
   Serial number: 3560002C712FAE31729D
   Coding: 2D2D2D

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel (J527)       Labels:| 5Q0-953-549.clb
   Part No SW: 5Q0 953 507 EA    HW: 5Q0 953 549 C
   Component: Lenks. Modul  002 0110  
   Revision: --------    Serial number: 09021404220563
   Coding: 0400
   Shop #: WSC 40195 333 37120
   ASAM Dataset: EV_SMLSKLOMQB 017001
   ROD: EV_SMLSKLOMQB_017_VW37.rod
   VCID: 79A83284C950E212A0E-802C

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:| 5G0-920-XXX-17.clb-SRI3
   Part No SW: 5G6 920 970 C    HW: 5G6 920 970 C
   Component: KOMBI         316 2210  
   Coding: 0BAD09122180CF0502086A00000000
   Shop #: WSC 00066 790 00202
   ASAM Dataset: EV_DashBoardVDDMQBAB 008031
   ROD: EV_DashBoardVDDMQBAB_008_VW37.rod
   VCID: 303ECFA05AAAE35A570-8064

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:| 5Q0-907-530-V1.clb
   Part No SW: 5Q0 907 530 P    HW: 5Q0 907 530 L
   Component: GW MQB Mid    211 2163  
   Revision: --------    Serial number: 19021410000713 Dataset Number: 5GM067v____ 1609
   Coding: 0101000820085900EF000028080F00000001000000000000000000000000
   Shop #: WSC 00066 790 00199
   GVL: 01503C1000000600400C00008000480000000000000000000000000000000000
   ASAM Dataset: EV_GatewConti 010015
   ROD: EV_GatewConti_010_VW37.rod
   VCID: 3E22E19890FE052AD5C-806A

   Generator: 

   Multi-function steering wheel control module: 
   Subsystem 2 - Part No SW: 5G0 959 442 Q    HW: 5G0 959 442 Q  Labels: 3C8-959-537.CLB
   Component: E221__MFL-DC1  H06 0101 
   Serial number: 27130002010210053502
   Coding: 28FFFF

No fault code found.

-------------------------------------------------------------------------------
Address 2B: Steer. Col. Lock (J764)       Labels:* 5Q0-905-861.clb
   Part No SW: 5Q0 905 861 A    HW: 5Q0 905 861 A
   Component: ELV-MQBA      H01 0120  
   Revision: 00000000    Serial number: 14000035071002
   Coding: 5500000000000000
   Shop #: WSC 00066 790 00199
   ASAM Dataset: EV_ELVMarquMQB 004111
   ROD: EV_ELVMarquMQB_004_VW37.rod
   VCID: 3436C3B0AEB2DF7A338-8060

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver (J386)       Labels:| 5QX-959-DCD-V1.clb
   Part No SW: 5Q0 959 593 B    HW: 5Q0 959 593 B
   Component: TSG FS        020 0025  
   Serial number: 1902140605003C Dataset Number: V03935199GP 0004
   Coding: 003E13200000040000000000
   Shop #: WSC 51637 001 1048576
   ASAM Dataset: EV_DCUDriveSideEWMAXKLO 006003
   ROD: EV_DCUDriveSideEWMAXCONT_VW37.rod
   VCID: 40DE9F60EA0A73DAA70-8014

   Left rear door control module: 
   Subsystem 1 - Part No SW: 5Q0 959 811 A    HW: 5Q0 959 811 A  Labels: 5QX-959-81X-V1.CLB
   Component: FOND_FHSG_DRV  005 0005 
   Serial number: 00000000000001650900
   Coding: 011000

1 Fault Found:
65604 - Door Warning Lamp 
          B1326 01 [00001001] - Electrical Failure
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 3
                    Fault Frequency: 1
                    Reset counter: 188
                    Mileage: 126508 km
                    Date: 2026.07.07
                    Time: 00:58:22


-------------------------------------------------------------------------------
Address 44: Steering Assist (J500)       Labels:| 5Q0-909-144.clb
   Part No SW: 3Q0 909 144 F    HW: 3Q0 909 144 F
   Component: EPS_MQB_ZFLS  503 5043  
   Dataset Number: 5GM074V____ 0305
   Coding: 8102
   Shop #: WSC 00066 790 00202
   ASAM Dataset: EV_SteerAssisMQB 010031
   ROD: EV_SteerAssisMQB_010.rod
   VCID: 3530FEB4A5C8C672046-8060

No fault code found.

-------------------------------------------------------------------------------
Address 47: Sound System (J525)       Labels:| 5G0-035-456.clb
   Part No SW: 5G0 035 456     HW: 5G0 035 456 
   Component: MIB_lite_amp  H30 0042  
   Serial number: VWZ8Z1DC400VYCX Dataset Number: 5GM050v____ 0009
   Coding: 22000000AAAAAA0000
   Shop #: WSC 01383 790 50316
   ASAM Dataset: EV_AMPMst11CALPI 001005
   ROD: EV_AMPMst11CALPI.rod
   VCID: 639470EC5BDC08C29A2-8036

1 Fault Found:
0517 - Rear Left Treble Speaker 
          B1066 13 [00001010] - Open Circuit
          [Hochtonlautsprecher Kanal 2: Unterbrechung (AC-Diagnose)]
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 6
                    Fault Frequency: 6
                    Reset counter: 239
                    Mileage: 126539 km
                    Date: 2026.07.10
                    Time: 00:26:28


-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. (J387)       Labels:| 5QX-959-X92-52.clb
   Part No SW: 5Q0 959 592 B    HW: 5Q0 959 592 B
   Component: TSG BFS       020 0025  
   Serial number: 280114060502K1 Dataset Number: V03935199GQ 0004
   Coding: 003E13200000040000000000
   Shop #: WSC 01383 790 50316
   ASAM Dataset: EV_DCUPasseSideEWMAXKLO 006003
   ROD: EV_DCUPasseSideEWMAXCONT_VW37.rod
   VCID: 3FDC9C9C97F40C22DEA-806A

   Right rear door control module: 
   Subsystem 1 - Part No SW: 5Q0 959 812 A    HW: 5Q0 959 812 A  Labels: 5QX-959-81X-V1.CLB
   Component: FOND_FHSG_PSG  005 0005 
   Serial number: 00000000000001259490
   Coding: 191000

1 Fault Found:
65604 - Door Warning Lamp 
          B1326 01 [00001001] - Electrical Failure
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 3
                    Fault Frequency: 1
                    Reset counter: 190
                    Mileage: 126532 km
                    Date: 2026.07.08
                    Time: 03:21:54


-------------------------------------------------------------------------------
Address 5F: Information Electr. (J794)       Labels:| 5G0-035-MIB-STD1.clb
   Part No SW: 5G0 035 844     HW: 5G0 035 844 
   Component: MU-S-S-US     013 0645  
   Serial number: V7B00902142405 Dataset Number: 5G0CV1v____ 0001
   Coding: 027300000000000021220002001800001F0203340100010002
   Shop #: WSC 00066 790 00199
   ASAM Dataset: EV_MUStd4CPASE 002040
   ROD: EV_MUStd4CPASE_VW37.rod
   VCID: 649673F05ED20FFA638-8030

   Display and control head 1 for information electronics: 
   Subsystem 1 - Part No SW: 5G0 919 605 H    HW: 5G0 919 605 H
   Component: ABT_Std_Plus  H60 0030 
   Serial number: VWZ8Z9PS5000DM      

1 Fault Found:
0020 - Tuner for Satellite Radio 
          B11CF 53 [00001001] - Deactivated
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 4
                    Fault Frequency: 1
                    Reset counter: 188
                    Mileage: 126508 km
                    Date: 2026.07.07
                    Time: 00:58:08

                    Voltage terminal 30: 14.0 V
                    Satellite radio tuner status-Satellite radio antenna status: electrically OK
                    Satellite radio tuner status-Channel selection for satellite radio: 0
                    Satellite radio tuner status-Audio Signal: Not available
                    Satellite radio tuner status-Antenna current: 0 mA
                    Satellite radio tuner status-Reception quality: Not available
                    Satellite radio tuner status-SDARS Flash Regional code: US_Audio_Traffic_Travellink


-------------------------------------------------------------------------------
Address 75: Telematics (J949)       Labels:| 5QE-035-28X-V1.clb
   Part No SW: 5QE 035 285     HW: 5QE 035 285 
   Component: OCULowMQBUS   006 0528  
   Dataset Number: 561098V____ 0403
   Coding: 02730002C2823A017F1E06000000
   Shop #: WSC 00066 790 00145
   ASAM Dataset: EV_OCULowMQB 001003
   ROD: EV_OCULowMQB_VW37.rod
   VCID: 025A5568A486A1CAF14-8056

2 Faults Found:
9457664 - Function limitation due to excessive temperature 
          B1050 00 [00001000] - -
          [restriction due to temperature rise]
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 6
                    Fault Frequency: 1
                    Reset counter: 0

2103041 - Control Module 
          B1788 F0 [00001001] - Start Prohibition Deactivated
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 8
                    Fault Frequency: 1
                    Reset counter: 198
                    Date: 2000.00.00
                    Time: 00:00:00


-------------------------------------------------------------------------------
Address A9: Struct. Borne Sound (J869)       Labels: 4H0-907-159.clb
   Part No SW: 5G0 907 159     HW: 4H0 907 159 A
   Component: SAS-GEN 2     H06 0013  
   Serial number: 140127200336
   ASAM Dataset: EV_SoundActuaGen2AU64X 003010
   ROD: EV_SoundActuaGen2AU64X_003_VW37.rod
   VCID: 6B8418CCB30C4082222-803E

No fault code found.

End----------(Elapsed Time: 01:20, VBatt start/end: 13.9V/13.9V)-----------
------------------------------9 Faults Found-------------------------------

 

[DrPeter]

Hi there,

How long I should drive the car in terms of miles to get the above 3 monitors ready?

As long as it takes... until Readiness sets or you get a fault code, by the way does this vehicle have a tune on the Engine controller? If so, you will want to talk to your tuner.

For this vehicle you will want to use the Basic Settings: IDE00553-Automatic test procedure


Here is the full procedure:

Automatic test sequence] - Readiness Tests of UDS Engine controllers

Prerequisites: All Electrical consumers off

Select [01-Engine]
- Check and clear fault codes, even if there are none.

Start engine
- Select [Basic settings] - IDE00553
[Automatic test procedure] or [Automatic test procedure]

Select the following [Show Measuring Data]:
IDE00450 [Operating Instructions] - (As is says, follow instructions)
IDE00451 [Currently running routine] - (Current test being performed)
IDE00030 [Status of actuator test] - (Current status)
IDE00727 [Test steps to be performed] - (This should count down to 0)
IDE00021 [Engine speed] - (Follow instructions, above)
IDE00025 [Coolant temperature] - (Should be at least 80'C)

- Press [Go] for the Basic Settings, [Automatic test sequence/procedure]
- Follow the 'Operating instructions', press and hold brake/accelerator pedal until the test has finished.

When the system has finished you should get the message "System OK" in the [Operating Instructions] field.


Hope this helps,

drpeter

 

[geyungjen]

VCDS shows it does not have tune since coming out of the factory.

Last successful flash attempt is in 2014
Successful flash attempt is 1/1/1/1

I have not attempted to perform "Automatic test sequence/procedure", which needs to press both brake and gas pedal all the way to the floor, a little scary Pressing gas pedal to the floor is like rpm would go through the roof

I think I just drive as long as it takes until ready

Thanks

 

[Uwe]

Last successful flash attempt is in 2014
Successful flash attempt is 1/1/1/1

I would take that with a grain of salt. There are tuners that have figured out how to reset the flash counters.

I have not attempted to perform "Automatic test sequence/procedure", which needs to press both brake and gas pedal all the way to the floor, a little scary Pressing gas pedal to the floor is like rpm would go through the roof

With the proper Basic Setting active, the ECU will control RPM to where it wants to have it for the test when you do that.

-Uwe-

 

[geyungjen]

Hi there,



As long as it takes... until Readiness sets or you get a fault code, by the way does this vehicle have a tune on the Engine controller? If so, you will want to talk to your tuner.

For this vehicle you will want to use the Basic Settings: IDE00553-Automatic test procedure


Here is the full procedure:

Automatic test sequence] - Readiness Tests of UDS Engine controllers

Prerequisites: All Electrical consumers off

Select [01-Engine]
- Check and clear fault codes, even if there are none.

Start engine
- Select [Basic settings] - IDE00553
[Automatic test procedure] or [Automatic test procedure]

Select the following [Show Measuring Data]:
IDE00450 [Operating Instructions] - (As is says, follow instructions)
IDE00451 [Currently running routine] - (Current test being performed)
IDE00030 [Status of actuator test] - (Current status)
IDE00727 [Test steps to be performed] - (This should count down to 0)
IDE00021 [Engine speed] - (Follow instructions, above)
IDE00025 [Coolant temperature] - (Should be at least 80'C)

- Press [Go] for the Basic Settings, [Automatic test sequence/procedure]
- Follow the 'Operating instructions', press and hold brake/accelerator pedal until the test has finished.

When the system has finished you should get the message "System OK" in the [Operating Instructions] field.


Hope this helps,

drpeter

Thanks Drpeter, I have run the Automatic Test Procedure under Basic Setting and show these measuring data, worked great

Test completed:

VCDS readyness show all of 8 monitors ready:

But OBD readyness still show Fuel monitor not ready:

It is highly likely that fuel system monitor was never included in the VAG proprietory 8 bit readyness vector, so Automatic test procedure will not test Fuel system monitor.

Question:

Is there any way to set it ready without driving?

Thanks again for the great advice that made Catalyst and Oxgen monitors ready.

 

[Crasher]

Why are you doing this in the generic OBD function instead of in address 01, readiness?

 

[geyungjen]

Why are you doing this in the generic OBD function instead of in address 01, readiness?

Because I need to have the car pass California Smog Test that all OBD monitors are required to be ready for passing.

By the way, here is response from AI:

California would check something outside of Volkswagen's own diagnostic readiness vector. However, the California smog test machine strictly operates under Federal SAE J1979 / Generic OBD-II standards, entirely ignoring VAG’s proprietary 8-bit readiness vector.

Why VAG Excluded Fuel From Its 8-Bit Vector​

Volkswagen created that 8-bit readiness vector (often seen in VCDS or factory ODIS tools) for a very specific engineering reason: it tracks non-continuous active self-tests.

• VAG 8-Bit Vector (CAT | CAT HEATER | EVAP | AIR | A/C | O2 | O2 HEATER | EGR):These are non-continuous systems. They require the ECU to intrusively command specific component sweeps (e.g., heating up an O2 sensor, cycling an EVAP purge valve, running a catalytic oxygen-storage check). Because a technician can force these routines while parked using VCDS, VW built an internal 8-bit byte to track their completion.
• Fuel System & Misfire (Continuous Monitors):VW did not include the Fuel Monitor or Misfire Monitor in that 8-bit byte because they are passive, continuous calculations, not active intrusive tests. The ECU processes fuel trim math in the background 100% of the time whenever the engine is in Closed-Loop. Since there is no "test routine" to trigger, VW saw no reason to put it in their basic setting readiness byte.

How the California Smog Machine (BAR-OIS) Actually Inspects Your Car​

By federal law, state inspection programs cannot use manufacturer-proprietary scan protocols because every car maker (VW, Ford, Toyota, BMW) structures their internal software differently.

Instead, the California Bureau of Automotive Repair (BAR) machine uses Generic OBD-II Mode 01 (PID $01), which is identical across all manufacturers:

1. The Machine Queries Mode 01: When plugged into your 2015 GTI, the BAR machine asks the ECU: "Send me the status of all SAE J1979 supported readiness monitors since DTCs were cleared."
2. The ECU Responds with Standard SAE Bits: Your VW ECU replies using standard OBD-II formatting, which explicitly includes:
   
   • Misfire Monitor: (Continuous)
   • Fuel System Monitor: (Continuous)
   • Comprehensive Component Monitor: (Continuous)
   • Catalyst Monitor: (Non-Continuous)
   • O2 Sensor Monitor: (Non-Continuous)
   • EVAP Monitor: (Non-Continuous)
3. The Pass/Fail Logic Applies: The BAR machine reads the Fuel System Monitor bit directly from standard OBD-II PID $01. If it reads "Incomplete" or "Not Ready," the inspection machine will fail the readiness check before even starting the tailpipe/tamper test.

Summary​

The BAR smog inspection machine does not know or care about VW's internal 8-bit readiness domain. It reads the standard Generic OBD-II Fuel System Monitor bit, which is mandated by the EPA and California Air Resources Board (CARB) for all 1996 and newer vehicles.

 

[Uwe]

Since there is no "test routine" to trigger, VW saw no reason to put it in their basic setting readiness byte.

I suppose that answers your previous question:

Is there any way to set it ready without driving?

-Uwe-

 

[geyungjen]

Here is my plan for the remaining Fuel system monitor:

There is no engine code.

Drive the car at night like 10:30pm after warming up, on highway at 55 MPH, exit the highway by coast down without press brake and change gear until speed down to 20MPH while gas level is between 1/4 and 3/4.

Also, using VCDS:

Check Fuel Trims to Rule Out Subtle Air/Fuel Skews​

If Mode 01 still shows "Incomplete", the replacement engine's fuel trims might be sitting near the outer boundary of what the ECM considers "normal," causing it to delay validating the monitor.

1. In VCDS, go to 01-Engine -> Advanced Measuring Values.
   
   • IDE00021 – Engine speed (RPM)
   • IDE00604 – Adaptation of mixture formation bank 1 at idle / Short-term fuel trim (STFT)
   • IDE00597 – Long-term adaptation of mixture formation bank 1 / Long-term fuel trim (LTFT)

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Common Causes for High Fuel Trims After an Engine Swap​

If LTFT is slightly high (e.g., +10%), look for these minor physical causes that don't trigger a fault code:

• Minor Intake Air Leak: A loose PCV hose, slightly unseated dipstick, or loose intake boot clamp behind the Mass Air Flow / Manifold Pressure sensor.
• Exhaust Manifold / Downpipe Sealing: A slight exhaust leak before or at the primary O2 sensor flange introduces outside air, tricking the O2 sensor into reading lean and adding unnecessary fuel.
• Purge Valve (N80): A sticking EVAP purge valve can draw unaccounted fuel vapors into the intake.

Short-Term Fuel Trim (STFT) behaves differently than Long-Term Fuel Trim (LTFT) because it moves in real time. While LTFT is a slow, stored average, STFT bounces rapidly around 0% as the engine control module (ECM) continuously adjusts the fuel injectors based on instantaneous oxygen sensor readings.

Here is the exact value range breakdown for STFT on your EA888 Gen 3 engine:

1. Normal / Healthy Range:​

• At Steady Idle or Constant Speed: STFT should oscillate rapidly between approx. -3% and +3% (or -5% and +5%).
• What it means: The ECM is easily maintaining a perfect stoichiometric air-fuel ratio (λ = 1.0) with only microscopic, real-time injector corrections.

2. Normal Dynamic Range (During Acceleration / Deceleration): Up to​

• During Rapid Throttle Changes: STFT will briefly spike higher or lower (e.g., jump to +8% when you step on the gas or drop to -8% when you lift off).
• What it means: This transient movement is completely normal as the ECM compensates for sudden airflow changes before the engine stabilizes back to steady-state.

3. Borderline Range (Delays Fuel Monitor Completion):​

• If STFT remains constantly positive (+10% to +15%): The ECM is having to add a significant amount of extra fuel in real time to compensate for unmetered air (a minor vacuum leak, unseated dipstick, PCV breather line leak, or loose intake hose clamp).
• If STFT remains constantly negative -10%$ to -15%): The ECM is actively subtracting fuel in real time due to over-fueling (leaking EVAP purge valve N80, or slightly dripping injector).
• Impact on Readiness: When STFT sits constantly outside the 5% band during steady cruising or idling, the ECM delays committing those calculations into LTFT, which keeps the continuous Fuel System Monitor in a "Not Ready" / "Incomplete" state.

4. Fault Code Range: Exceeding​

• If STFT (combined with LTFT) stays above +20% or below -20% for a set duration, the ECM reaches its maximum adaptation limit and illuminates the Check Engine Light (DTC P0171 System Too Lean or P0172 System Too Rich).

Total Fuel Trim Rule of Thumb​

To know your engine's true air-fuel correction state, add the two numbers together:

Total Fuel Trim = LTFT + STFT

• Target: Combined Total Fuel Trim should be within -5% to +5% while idling or holding a steady 55 mph speed.
• Verification in VCDS: When logging IDE00021 (LTFT) and IDE00022 (STFT) while idling at operating temperature, if STFT is bouncing right around 0% (e.g., -1.5% to +2.1%$, your fuel metering is working as intended.

If LTFT/STFT is not normal, out of the range, even not enough to trigger code, Fuel monitor will not be set ready. VW dealer had replaced with new VW engine, and new intake manifold that come with VW 12 months/12000 miles warranty, I will take it to dealer asking them to measure LTFT and STFT values with their official ODIS and then request them to rectify until VW spec is met, which should then enable Fuel monitor to be ready after driving home from dealership.

 

[geyungjen]

Here is my plan for the remaining Fuel system monitor:

There is no engine code.

Drive the car at night like 10:30pm after warming up, on highway at 55 MPH, exit the highway by coast down without press brake and change gear until speed down to 20MPH while gas level is between 1/4 and 3/4.

Also, using VCDS:

Check Fuel Trims to Rule Out Subtle Air/Fuel Skews​

If Mode 01 still shows "Incomplete", the replacement engine's fuel trims might be sitting near the outer boundary of what the ECM considers "normal," causing it to delay validating the monitor.

1. In VCDS, go to 01-Engine -> Advanced Measuring Values.
   
   • IDE00021 – Engine speed (RPM)
   • IDE00604 – Adaptation of mixture formation bank 1 at idle / Short-term fuel trim (STFT)
   • IDE00597 – Long-term adaptation of mixture formation bank 1 / Long-term fuel trim (LTFT)

Video disabled

This video is disabled because third-party cookies are not currently accepted. To view YouTube videos, please accept third-party cookies.

Accept third-party cookies

Common Causes for High Fuel Trims After an Engine Swap​

If LTFT is slightly high (e.g., +10%), look for these minor physical causes that don't trigger a fault code:

• Minor Intake Air Leak: A loose PCV hose, slightly unseated dipstick, or loose intake boot clamp behind the Mass Air Flow / Manifold Pressure sensor.
• Exhaust Manifold / Downpipe Sealing: A slight exhaust leak before or at the primary O2 sensor flange introduces outside air, tricking the O2 sensor into reading lean and adding unnecessary fuel.
• Purge Valve (N80): A sticking EVAP purge valve can draw unaccounted fuel vapors into the intake.

Short-Term Fuel Trim (STFT) behaves differently than Long-Term Fuel Trim (LTFT) because it moves in real time. While LTFT is a slow, stored average, STFT bounces rapidly around 0% as the engine control module (ECM) continuously adjusts the fuel injectors based on instantaneous oxygen sensor readings.

Here is the exact value range breakdown for STFT on your EA888 Gen 3 engine:

1. Normal / Healthy Range:​

• At Steady Idle or Constant Speed: STFT should oscillate rapidly between approx. -3% and +3% (or -5% and +5%).
• What it means: The ECM is easily maintaining a perfect stoichiometric air-fuel ratio (λ = 1.0) with only microscopic, real-time injector corrections.

2. Normal Dynamic Range (During Acceleration / Deceleration): Up to​

• During Rapid Throttle Changes: STFT will briefly spike higher or lower (e.g., jump to +8% when you step on the gas or drop to -8% when you lift off).
• What it means: This transient movement is completely normal as the ECM compensates for sudden airflow changes before the engine stabilizes back to steady-state.

3. Borderline Range (Delays Fuel Monitor Completion):​

• If STFT remains constantly positive (+10% to +15%): The ECM is having to add a significant amount of extra fuel in real time to compensate for unmetered air (a minor vacuum leak, unseated dipstick, PCV breather line leak, or loose intake hose clamp).
• If STFT remains constantly negative -10%$ to -15%): The ECM is actively subtracting fuel in real time due to over-fueling (leaking EVAP purge valve N80, or slightly dripping injector).
• Impact on Readiness: When STFT sits constantly outside the 5% band during steady cruising or idling, the ECM delays committing those calculations into LTFT, which keeps the continuous Fuel System Monitor in a "Not Ready" / "Incomplete" state.

4. Fault Code Range: Exceeding​

• If STFT (combined with LTFT) stays above +20% or below -20% for a set duration, the ECM reaches its maximum adaptation limit and illuminates the Check Engine Light (DTC P0171 System Too Lean or P0172 System Too Rich).

Total Fuel Trim Rule of Thumb​

To know your engine's true air-fuel correction state, add the two numbers together:

Total Fuel Trim = LTFT + STFT

• Target: Combined Total Fuel Trim should be within -5% to +5% while idling or holding a steady 55 mph speed.
• Verification in VCDS: When logging IDE00021 (LTFT) and IDE00022 (STFT) while idling at operating temperature, if STFT is bouncing right around 0% (e.g., -1.5% to +2.1%$, your fuel metering is working as intended.

If LTFT/STFT is not normal, out of the range, even not enough to trigger code, Fuel monitor will not be set ready. VW dealer had replaced with new VW engine, and new intake manifold that come with VW 12 months/12000 miles warranty, I will take it to dealer asking them to measure LTFT and STFT values with their official ODIS and then request them to rectify until VW spec is met, which should then enable Fuel monitor to be ready after driving home from dealership.

According to California Bureau of Automotive Repair (BAR):

On-Board Diagnostic Test Reference

A summary of pass/fail standards for the On-Board Diagnostic (OBD) test portion of a Smog Check inspection and instructions for inspecting vehicles with known OBD test difficulties.

www.bar.ca.gov

The misfire, fuel, and comprehensive component continuous monitors are ignored during an OBD test on "gas" vehicles.

This means, fuel system monitor not ready will not fail the smog test, provided other monitors are ready and no CEL and no code.