Resolved Do I have a radiator fan issue: Fan 1 seems to run always at 10 % and goes up to 50%, fan 2: no_ecf

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   #1  
M

macasoft

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2015 Jetta SE 1.8 TSI: When I start the car and let it warm up, the fan ramps up high for a couple seconds and rev down. I don't see any specific fault code below that would indicate any issue. See the log.

I also recorded the oil, water temps for 10 min during driving. See below the readout. (I couldn't find any information what "no_ecf" is.) Is this normal behaviour? Oil and water temps look ok.

Thank you in advance.

Code: 
Wednesday,26,November,2025,06:26:08:42034
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 8 x64
VCDS Version: 25.3.0.4 (x64)  HEX-NET2 CB: 0.4660.5
Data version: 20250311 DS365.0
www.Ross-Tech.com


VIN: 3VWD07AJ9FM213873   License Plate: BLACK20251126



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


Chassis Type: AJ-VW36 (6N0)
Scan: 01 02 03 04 05 08 09 15 17 19 25 2B 2E 37 44 56 75 77

VIN: 3VWD07AJ9FM213873  

01-Engine -- Status: Malfunction 0010
02-Auto Trans -- Status: OK 0000
03-ABS Brakes -- Status: Malfunction 0010
04-Steering Angle -- 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
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
25-Immobilizer -- Status: OK 0000
2B-Steer. Col. Lock -- Status: OK 0000
2E-Media Player 3 -- Status: OK 0000
37-Navigation -- Status: Malfunction 0010
44-Steering Assist -- Status: OK 0000
56-Radio -- Status: OK 0000
75-Telematics -- Status: Malfunction 0010
77-Telephone -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine (J623-CPKA)       Labels:. 06K-907-425-V2.clb
   Part No SW: 06K 997 071 B    HW: 06K 907 425 C
   Component: R4 1.8l TFS   H13 9350 
   Revision: --H13---    CVN: C1554430
   Coding: 001A0012242400165000
   Shop #: WSC 00066 790 00015
   ASAM Dataset: EV_ECM18TFS02006K997071B 001004
   ROD: EV_ECM18TFS02006K906071B.rod
   VCID: 343A76B69EB12C8A5BF-8060
   VINID: 0E69D400745A2567420432070CECA42409

4 Faults Found:
15376 - Valve for Fuel Metering (N290)
          P0090 00 [00100000] - Open Circuit
          [Fuel Pressure Regulator "A" Control Circuit/Open]
          Intermittent - Not Confirmed - Tested Since Memory Clear

15072 - Engine Start Blocked by Immobilizer
          P1570 00 [00100000] - -
          [Engine Control Module (ECM) locked]
          Intermittent - Not Confirmed - Tested Since Memory Clear

21406 - EVAP Emission Control Sys
          P0441 00 [01100000] - Incorrect Flow
          Intermittent - Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 2
                    Fault Frequency: 2
                    Mileage: 294175 km
                    Date: 2126.14.20
                    Time: 11:27:31

                    Engine speed: 1280.25 /min
                    Normed load value: 34.5 %
                    Vehicle speed: 54 km/h
                    Coolant temperature: 83 °C
                    Intake air temperature: 29 °C
                    Ambient air pressure: 1000 mbar
                    Voltage terminal 30: 14.160 V
                    Unlearning counter according OBD: 27
                    Engine: operating status: PL
                    STATE_LS_SAE[1]: CL
                    T_AST_SAE: 57 s
                    MAP_MES_SAE: 73 kPa
                    Lambda probe voltage: bank 1: probe 1 (broadband probe): 1.982 V
                    FAC_TPS_1_SAE: 17.187500 %
                    FUP_H_SAE: 14840.0 kPa

16448 - Camshaft Positioner (Bank 1 Intake)
          P000A 00 [01100000] - Slow Response
          Intermittent - Not Confirmed - Tested Since Memory Clear

Readiness: 0000 0000

-------------------------------------------------------------------------------
Address 02: Auto Trans (J217)       Labels:* 09G-927-749-V1.clb
   Part No SW: 09G 927 749 A    HW: 09G 927 749 A
   Component: AISIN AG6 G3  109 2856 
   CVN: 481EBFD0
   Coding: 000348
   Shop #: WSC 00066 790 00015
   ASAM Dataset: EV_TCMAQ250031 001004
   ROD: EV_TCMAQ250031_001.rod
   VCID: 372041BA8FC7C7927ED-8062

No fault code found.

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels:. 1K0-907-379-60EC1F.clb
   Part No SW: 1K0 907 379 BS    HW: 1K0 907 379 BS
   Component: ESP MK60EC1   H46 0166 
   Revision: 00H46001   
   Coding: A14B400C492300FD851302EB921C0041A1100012
   Shop #: WSC 00066 000 00000
   VCID: 045AE6768E115C0AABF-8050

1 Fault Found:
02214 - Tire Pressure Warning
            002 - Lower Limit Exceeded - Intermittent
             Freeze Frame:
                    Fault Status: 00100010
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 236
                    Mileage: 295457 km
                    Time Indication: 0
                    Date: 2063.14.13
                    Time: 23:23:60

             Freeze Frame:
                    Count: 0
                    Count: 32768
                    Count: 12800
                    Count: 16401
                    Count: 51534
                    Count: 0
                    Count: 1020
                    Count: 0


-------------------------------------------------------------------------------
Address 05: Acc/Start Auth. (J518)       Labels:| 5K0-959-434.clb
   Part No SW: 5K0 959 434 E    HW: 5K0 959 434
   Component: VWKESSYPQ35GP 092 1202 
   Revision: 00092000    Serial number: 0342315505 Dataset Number: 160116v____ 0002
   Coding: 030C0C
   Shop #: WSC 00066 000 00190
   ASAM Dataset: EV_KESSYPQ35G A02717
   ROD: EV_KESSYPQ35G_A02_VW32.rod
   VCID: 372041BA8FC7C7927ED-8062

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC        Labels: 5C0-820-047.clb
   Part No SW: 5C0 820 047 CA    HW: 5C0 820 047 CA
   Component: J301  Klimaanlage   0207 
   Revision: 2001001S    Serial number: 00000002274710
   Shop #: WSC 00066 790 00015
   VCID: 6194CFE27D43E922E09-8034

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:. 7H0-937-08x-09.clb
   Part No SW: 7H0 937 090 E    HW: 7H0 937 090 A
   Component: BCM PQ25 Max3 H74 0725 
   Revision: B8074001    Serial number: 27018234140255
   Coding: 7B994F9A082B0F0008382080240884C50FC6700E60A40050B0A050022844
   Shop #: WSC 58566 000 1048576
   VCID: 30327AA66A2910AA3F7-8064

   Subsystem 1 - Part No SW: 6R0 959 801 AN    HW: 6R0 959 801 AN  Labels: 6R0-959-801.CLB
   Component: J386__TSG_FT  006 5461
   Serial number: 14102585140714145500
   Coding: 820000

   Subsystem 2 - Part No SW: 6R0 959 802 AS    HW: 6R0 959 802 AS  Labels: 6R0-959-802.CLB
   Component: J387__TSG_BT  006 5461
   Serial number: 14102584140731213149
   Coding: 820000

   Subsystem 3 - Part No SW: 5K0 959 591     HW: 5K0 959 591
   Component: J245 PS41.022  H10 0007
   Serial number:     WRH000C2G44    
   Coding: 180000

   Subsystem 4 - Part No SW: 6C0 959 442 A    HW: 6C0 959 442 A
   Component: E221__MFL-TAT  H04 0019
   Serial number: 1901419300901864AD1B
   Coding: 280000

   Subsystem 5 - Part No SW: 6R0 959 811 M    HW: 6R0 959 811 M
   Component: J388__TSG_HL  006 5460
   Serial number: 14102587140730194841
   Coding: 800000

   Subsystem 6 - Part No SW: 6R0 959 812 M    HW: 6R0 959 812 M
   Component: J389__TSG_HR  006 5460
   Serial number: 14202586140804193317
   Coding: 800000

2 Faults Found:
03591 - Control Circuit for Horn
            011 - Open Circuit - Intermittent
             Freeze Frame:
                    Fault Status: 00101011
                    Fault Priority: 3
                    Fault Frequency: 160
                    Reset counter: 238
                    Mileage: 292549 km
                    Time Indication: 0
                    Date: 2061.14.01
                    Time: 05:56:60

00978 - Lamp for Low Beam; Left (M29)
            010 - Open or Short to Plus - Intermittent
             Freeze Frame:
                    Fault Status: 00101010
                    Fault Priority: 3
                    Fault Frequency: 1
                    Reset counter: 234
                    Mileage: 294990 km
                    Time Indication: 0
                    Date: 2063.14.05
                    Time: 07:24:31


-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:| 5K0-959-655.clb
   Part No SW: 5C0 959 655 AB    HW: 5C0 959 655 AB
   Component: AirbagVW10    500 0975 
   Serial number: 003LZD01X3D-   Dataset Number: 160003V____ 0312
   Coding: 00004B32
   Shop #: WSC 00066 790 00015
   ASAM Dataset: EV_AirbaVW10SMEVW360 001030
   ROD: EV_AirbaVW10SMEVW360.rod
   VCID: 72B6B0AEA42562BA893-8026

   Seat occupied recognition:
   Subsystem 1 - Part No SW: 4M0 959 339 A    HW: 4M0 959 339 A
   Component: BF-Gewichtss.  H05 0016
   Serial number: IBH0000J140001560400
   Coding: 303345

   Crash sensor for side airbag: driver side:
   Subsystem 2 - Part No SW: 5K0 959 354     HW: 5K0 959 354
   Component: S.Sens.Fahr.V  H02 ----
   Serial number: 3572MSME11507B46ZZZS

   Crash sensor for side airbag: passenger side:
   Subsystem 3 - Part No SW: 5K0 959 354     HW: 5K0 959 354
   Component: S.Sens.Beif.V  H02 ----
   Serial number: 3582MSME6F215D46ZZZ3

   Rear Side Airbag Crash Sensor (on driver's side):
   Subsystem 4 - Part No SW: 5K0 959 351 A    HW: 5K0 959 351 A
   Component: S.Sens.Fahr.H  H02 ----
   Serial number: 3516KSME036C0A30ZZZN

   Passenger side rear thorax airbag crash sensor:
   Subsystem 5 - Part No SW: 5K0 959 351 A    HW: 5K0 959 351 A
   Component: S.Sens.Beif.H  H02 ----
   Serial number: 3526KSME6C5D0A30ZZZ$

   Crash sensor for front airbag: driver side:
   Subsystem 6 - Part No SW: 5K0 959 659 A    HW: 5K0 959 659 A
   Component: F.Sens.Fahr  H02 ----
   Serial number: 3556LSME5D4D6C2FZZZL

   Crash sensor for front airbag: passenger side:
   Subsystem 7 - Part No SW: 5K0 959 659 A    HW: 5K0 959 659 A
   Component: F.Sens.Beif  H02 ----
   Serial number: 3566LSME40656C2FZZZ2

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments        Labels:
   Part No SW: 5C6 920 954 B    HW: 5C6 920 954 B
   Shop #: WSC 00066 000 00119
   ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A04727
   ROD: N/A
   VCID: 2D0C63D2759B7D42141-8078


-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:. 6N0-909-901-6R.clb
   Part No SW: 6N0 909 901     HW: 7H0 937 090 A
   Component: GW-K-CAN TP20 H74 0725 
   Revision: B8074001   
   Coding: 102200
   Shop #: WSC 58566 000 1048576
   VCID: 70B2BAA6AAA950AA7F7-8024

No fault code found.

-------------------------------------------------------------------------------
Address 25: Immobilizer (J334)       Labels:| 5K0-920-xxx-25.clb
   Part No SW: 5K0 953 234     HW: 5K0 953 234
   Component: IMMO          H04 0806 
   Serial number:              
   Coding: 000007
   Shop #: WSC 00066 000 00119
   ASAM Dataset: EV_Immo_UDS_VDD_RM09 A03710
   ROD: EV_Immo_UDS_VDD_RM09_VW32.rod
   VCID: 6A86A8CE8CF5AA7A313-803E

No fault code found.

-------------------------------------------------------------------------------
Address 2B: Steer. Col. Lock (J764)       Labels:* 5K0-905-861.clb
   Part No SW: 5K0 905 861 C    HW: 5K0 905 861 C
   Component: ELV-PQ35      H21 0240 
   Revision: 00000000    Serial number: 14000194518002
   Coding: 4900000000000000
   Shop #: WSC 00066 000 00119
   ASAM Dataset: EV_ELVMarquMPVW36X A01001
   ROD: EV_ELVMarquMPVW36X_VW32.rod
   VCID: 30327AA66AA910AA3F7-8064

No fault code found.

-------------------------------------------------------------------------------
Address 2E: Media Player 3
Cannot be reached

-------------------------------------------------------------------------------
Address 37: Navigation (J794)       Labels:| 1K0-035-27x-37.clb
   Part No SW: 1Q0 035 274 B    HW: 1Q0 035 274 B
   Component: RNS315-NAR    H81 0500 
   Serial number: VWZAZ2P0409866
   Coding: 040004610200060000008000
   Shop #: WSC 00066 000 00119
   ASAM Dataset: EV_RNS315NARV2UDS 001705
   ROD: EV_RNS315NARV2UDS_VW32.rod
   VCID: 290497C249736162F89-807C

   Data carrier:
   Subsystem 1 - Part No: 3AA 919 866 B
   Component: NAR_V10  0072

1 Fault Found:
1048669 - Tuner for Satellite Radio
          B11CF 53 [00001001] - Deactivated
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 7
                    Fault Frequency: 1
                    Reset counter: 99
                    Mileage: 270196 km
                    Date: 2110.14.07
                    Time: 09:48:56


-------------------------------------------------------------------------------
Address 44: Steering Assist        Labels: 1K0-909-14x-GEN3.clb
   Part No: 1K0 909 144 R
   Component: EPS_ZFLS Kl. 306    3501 
   Revision: 00H22000   
   Shop #: WSC 06307 004 1048576
   VCID: 39244782B553D1E2889-806C

No fault code found.

-------------------------------------------------------------------------------
Address 75: Telematics (J949)       Labels:| 12E-035-284.clb
   Part No SW: 561 035 285     HW: 561 035 285
   Component: OCULowUSA     014 0102 
   Serial number: 000003554140525 Dataset Number: V03935196FH 0010
   Coding: 02630102C2423A107F1606000000
   Shop #: WSC 01383 790 50316
   ASAM Dataset: EV_OCULow 001010
   ROD: EV_OCULow_001_VW12.rod
   VCID: 53F8152A3B7F0BB2625-8006

1 Fault Found:
2103041 - Control Module
          B1788 F0 [00001001] - Start Prohibition Deactivated
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 8
                    Fault Frequency: 1
                    Reset counter: 203
                    Mileage: 295872 km
                    Date: 2127.14.17
                    Time: 06:19:13


-------------------------------------------------------------------------------
Address 77: Telephone (J412)       Labels:| 5N0-035-729.clb
   Part No SW: 5N0 035 729 A    HW: 5N0 035 729 A
   Component: TELEFON       H05 0592 
   Revision: 1B001001    Serial number: 00007666315467 Dataset Number: 5N0035729A  0001
   Coding: 0A100300A0010110
   Shop #: WSC 01383 790 50316
   ASAM Dataset: EV_UHVUMI 001007
   ROD: EV_UHVUMI.rod
   VCID: 2E0E64DE709D065A2DB-807A

No fault code found.

End----------(Elapsed Time: 02:42, VBatt start/end: 12.2V/12.3V)-----------


Data during driving:

Clipboard01.jpg
Code:
 
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   #2  
Uwe

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Coolant temp only in the low 60C range...?

-Uwe-
 
   #3  
M

macasoft

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No. Sorry, that was the first couple min after stopping for ~1.5 hr this morning. Here is some other data below. That first increase in the fan % is at 180 seconds is about when I stopped at a red light. Seems all jumps up at red lights that makes sense. Radiator fan 2 is 0% all the time. Our outside temp is about 12-15 oC. Thank you Uwe for looking at it.


Clipboard01.jpg
 
   #4  
Dr Sheldon

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Does the Heating and Cooling in the Passenger Compartment work well ?
 
   #5  
SaVAGeSoot

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Which temp sensor are you reading?
Have you compared the one on the rad outlet to the one on the engine to the oil temp? This alone should allow you to focus on the problem area (if there is one)
 
   #6  
Dr Sheldon

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And make your measurements / logs with AC OFF !

It muddies the waters !
 
   #8  
M

macasoft

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SaVAGeSoot said:
Which temp sensor are you reading?
Have you compared the one on the rad outlet to the one on the engine to the oil temp? This alone should allow you to focus on the problem area (if there is one)
Click to expand...

Thanks. Let me recollect all possible temperatures.
 
   #9  
Uwe

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macasoft said:
When I start the car and let it warm up, the fan ramps up high for a couple seconds and rev down.
Click to expand...
Question: What mode is your climate control in? Does this behavior persist if you completely shut down the A/C? You generally need to put it in ECON mode to do that.

-Uwe-
 
   #10  
Dr Sheldon

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Uwe said:
Question: What mode is your climate control in? Does this behavior persist if you completely shut down the A/C? You generally need to put it in ECON mode to do that.

-Uwe-
Click to expand...
My thoughts too !!

macasoft said:
2015 Jetta SE 1.8 TSI: When I start the car and let it warm up, the fan ramps up high for a couple seconds and rev down. I don't see any specific fault code below that would indicate any issue. See the log.

I also recorded the oil, water temps for 10 min during driving. See below the readout. (I couldn't find any information what "no_ecf" is.) Is this normal behaviour? Oil and water temps look ok.

Thank you in advance.

Code: 
Wednesday,26,November,2025,06:26:08:42034
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 8 x64
VCDS Version: 25.3.0.4 (x64)  HEX-NET2 CB: 0.4660.5
Data version: 20250311 DS365.0
www.Ross-Tech.com


VIN: 3VWD07AJ9FM213873   License Plate: BLACK20251126



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


Chassis Type: AJ-VW36 (6N0)
Scan: 01 02 03 04 05 08 09 15 17 19 25 2B 2E 37 44 56 75 77

VIN: 3VWD07AJ9FM213873 

01-Engine -- Status: Malfunction 0010
02-Auto Trans -- Status: OK 0000
03-ABS Brakes -- Status: Malfunction 0010
04-Steering Angle -- 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
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
25-Immobilizer -- Status: OK 0000
2B-Steer. Col. Lock -- Status: OK 0000
2E-Media Player 3 -- Status: OK 0000
37-Navigation -- Status: Malfunction 0010
44-Steering Assist -- Status: OK 0000
56-Radio -- Status: OK 0000
75-Telematics -- Status: Malfunction 0010
77-Telephone -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine (J623-CPKA)       Labels:. 06K-907-425-V2.clb
   Part No SW: 06K 997 071 B    HW: 06K 907 425 C
   Component: R4 1.8l TFS   H13 9350
   Revision: --H13---    CVN: C1554430
   Coding: 001A0012242400165000
   Shop #: WSC 00066 790 00015
   ASAM Dataset: EV_ECM18TFS02006K997071B 001004
   ROD: EV_ECM18TFS02006K906071B.rod
   VCID: 343A76B69EB12C8A5BF-8060
   VINID: 0E69D400745A2567420432070CECA42409

4 Faults Found:
15376 - Valve for Fuel Metering (N290)
          P0090 00 [00100000] - Open Circuit
          [Fuel Pressure Regulator "A" Control Circuit/Open]
          Intermittent - Not Confirmed - Tested Since Memory Clear

15072 - Engine Start Blocked by Immobilizer
          P1570 00 [00100000] - -
          [Engine Control Module (ECM) locked]
          Intermittent - Not Confirmed - Tested Since Memory Clear

21406 - EVAP Emission Control Sys
          P0441 00 [01100000] - Incorrect Flow
          Intermittent - Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 2
                    Fault Frequency: 2
                    Mileage: 294175 km
                    Date: 2126.14.20
                    Time: 11:27:31

                    Engine speed: 1280.25 /min
                    Normed load value: 34.5 %
                    Vehicle speed: 54 km/h
                    Coolant temperature: 83 °C
                    Intake air temperature: 29 °C
                    Ambient air pressure: 1000 mbar
                    Voltage terminal 30: 14.160 V
                    Unlearning counter according OBD: 27
                    Engine: operating status: PL
                    STATE_LS_SAE[1]: CL
                    T_AST_SAE: 57 s
                    MAP_MES_SAE: 73 kPa
                    Lambda probe voltage: bank 1: probe 1 (broadband probe): 1.982 V
                    FAC_TPS_1_SAE: 17.187500 %
                    FUP_H_SAE: 14840.0 kPa

16448 - Camshaft Positioner (Bank 1 Intake)
          P000A 00 [01100000] - Slow Response
          Intermittent - Not Confirmed - Tested Since Memory Clear

Readiness: 0000 0000

-------------------------------------------------------------------------------
Address 02: Auto Trans (J217)       Labels:* 09G-927-749-V1.clb
   Part No SW: 09G 927 749 A    HW: 09G 927 749 A
   Component: AISIN AG6 G3  109 2856
   CVN: 481EBFD0
   Coding: 000348
   Shop #: WSC 00066 790 00015
   ASAM Dataset: EV_TCMAQ250031 001004
   ROD: EV_TCMAQ250031_001.rod
   VCID: 372041BA8FC7C7927ED-8062

No fault code found.

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels:. 1K0-907-379-60EC1F.clb
   Part No SW: 1K0 907 379 BS    HW: 1K0 907 379 BS
   Component: ESP MK60EC1   H46 0166
   Revision: 00H46001  
   Coding: A14B400C492300FD851302EB921C0041A1100012
   Shop #: WSC 00066 000 00000
   VCID: 045AE6768E115C0AABF-8050

1 Fault Found:
02214 - Tire Pressure Warning
            002 - Lower Limit Exceeded - Intermittent
             Freeze Frame:
                    Fault Status: 00100010
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 236
                    Mileage: 295457 km
                    Time Indication: 0
                    Date: 2063.14.13
                    Time: 23:23:60

             Freeze Frame:
                    Count: 0
                    Count: 32768
                    Count: 12800
                    Count: 16401
                    Count: 51534
                    Count: 0
                    Count: 1020
                    Count: 0


-------------------------------------------------------------------------------
Address 05: Acc/Start Auth. (J518)       Labels:| 5K0-959-434.clb
   Part No SW: 5K0 959 434 E    HW: 5K0 959 434
   Component: VWKESSYPQ35GP 092 1202
   Revision: 00092000    Serial number: 0342315505 Dataset Number: 160116v____ 0002
   Coding: 030C0C
   Shop #: WSC 00066 000 00190
   ASAM Dataset: EV_KESSYPQ35G A02717
   ROD: EV_KESSYPQ35G_A02_VW32.rod
   VCID: 372041BA8FC7C7927ED-8062

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC        Labels: 5C0-820-047.clb
   Part No SW: 5C0 820 047 CA    HW: 5C0 820 047 CA
   Component: J301  Klimaanlage   0207
   Revision: 2001001S    Serial number: 00000002274710
   Shop #: WSC 00066 790 00015
   VCID: 6194CFE27D43E922E09-8034

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:. 7H0-937-08x-09.clb
   Part No SW: 7H0 937 090 E    HW: 7H0 937 090 A
   Component: BCM PQ25 Max3 H74 0725
   Revision: B8074001    Serial number: 27018234140255
   Coding: 7B994F9A082B0F0008382080240884C50FC6700E60A40050B0A050022844
   Shop #: WSC 58566 000 1048576
   VCID: 30327AA66A2910AA3F7-8064

   Subsystem 1 - Part No SW: 6R0 959 801 AN    HW: 6R0 959 801 AN  Labels: 6R0-959-801.CLB
   Component: J386__TSG_FT  006 5461
   Serial number: 14102585140714145500
   Coding: 820000

   Subsystem 2 - Part No SW: 6R0 959 802 AS    HW: 6R0 959 802 AS  Labels: 6R0-959-802.CLB
   Component: J387__TSG_BT  006 5461
   Serial number: 14102584140731213149
   Coding: 820000

   Subsystem 3 - Part No SW: 5K0 959 591     HW: 5K0 959 591
   Component: J245 PS41.022  H10 0007
   Serial number:     WRH000C2G44   
   Coding: 180000

   Subsystem 4 - Part No SW: 6C0 959 442 A    HW: 6C0 959 442 A
   Component: E221__MFL-TAT  H04 0019
   Serial number: 1901419300901864AD1B
   Coding: 280000

   Subsystem 5 - Part No SW: 6R0 959 811 M    HW: 6R0 959 811 M
   Component: J388__TSG_HL  006 5460
   Serial number: 14102587140730194841
   Coding: 800000

   Subsystem 6 - Part No SW: 6R0 959 812 M    HW: 6R0 959 812 M
   Component: J389__TSG_HR  006 5460
   Serial number: 14202586140804193317
   Coding: 800000

2 Faults Found:
03591 - Control Circuit for Horn
            011 - Open Circuit - Intermittent
             Freeze Frame:
                    Fault Status: 00101011
                    Fault Priority: 3
                    Fault Frequency: 160
                    Reset counter: 238
                    Mileage: 292549 km
                    Time Indication: 0
                    Date: 2061.14.01
                    Time: 05:56:60

00978 - Lamp for Low Beam; Left (M29)
            010 - Open or Short to Plus - Intermittent
             Freeze Frame:
                    Fault Status: 00101010
                    Fault Priority: 3
                    Fault Frequency: 1
                    Reset counter: 234
                    Mileage: 294990 km
                    Time Indication: 0
                    Date: 2063.14.05
                    Time: 07:24:31


-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:| 5K0-959-655.clb
   Part No SW: 5C0 959 655 AB    HW: 5C0 959 655 AB
   Component: AirbagVW10    500 0975
   Serial number: 003LZD01X3D-   Dataset Number: 160003V____ 0312
   Coding: 00004B32
   Shop #: WSC 00066 790 00015
   ASAM Dataset: EV_AirbaVW10SMEVW360 001030
   ROD: EV_AirbaVW10SMEVW360.rod
   VCID: 72B6B0AEA42562BA893-8026

   Seat occupied recognition:
   Subsystem 1 - Part No SW: 4M0 959 339 A    HW: 4M0 959 339 A
   Component: BF-Gewichtss.  H05 0016
   Serial number: IBH0000J140001560400
   Coding: 303345

   Crash sensor for side airbag: driver side:
   Subsystem 2 - Part No SW: 5K0 959 354     HW: 5K0 959 354
   Component: S.Sens.Fahr.V  H02 ----
   Serial number: 3572MSME11507B46ZZZS

   Crash sensor for side airbag: passenger side:
   Subsystem 3 - Part No SW: 5K0 959 354     HW: 5K0 959 354
   Component: S.Sens.Beif.V  H02 ----
   Serial number: 3582MSME6F215D46ZZZ3

   Rear Side Airbag Crash Sensor (on driver's side):
   Subsystem 4 - Part No SW: 5K0 959 351 A    HW: 5K0 959 351 A
   Component: S.Sens.Fahr.H  H02 ----
   Serial number: 3516KSME036C0A30ZZZN

   Passenger side rear thorax airbag crash sensor:
   Subsystem 5 - Part No SW: 5K0 959 351 A    HW: 5K0 959 351 A
   Component: S.Sens.Beif.H  H02 ----
   Serial number: 3526KSME6C5D0A30ZZZ$

   Crash sensor for front airbag: driver side:
   Subsystem 6 - Part No SW: 5K0 959 659 A    HW: 5K0 959 659 A
   Component: F.Sens.Fahr  H02 ----
   Serial number: 3556LSME5D4D6C2FZZZL

   Crash sensor for front airbag: passenger side:
   Subsystem 7 - Part No SW: 5K0 959 659 A    HW: 5K0 959 659 A
   Component: F.Sens.Beif  H02 ----
   Serial number: 3566LSME40656C2FZZZ2

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments        Labels:
   Part No SW: 5C6 920 954 B    HW: 5C6 920 954 B
   Shop #: WSC 00066 000 00119
   ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A04727
   ROD: N/A
   VCID: 2D0C63D2759B7D42141-8078


-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:. 6N0-909-901-6R.clb
   Part No SW: 6N0 909 901     HW: 7H0 937 090 A
   Component: GW-K-CAN TP20 H74 0725
   Revision: B8074001  
   Coding: 102200
   Shop #: WSC 58566 000 1048576
   VCID: 70B2BAA6AAA950AA7F7-8024

No fault code found.

-------------------------------------------------------------------------------
Address 25: Immobilizer (J334)       Labels:| 5K0-920-xxx-25.clb
   Part No SW: 5K0 953 234     HW: 5K0 953 234
   Component: IMMO          H04 0806
   Serial number:             
   Coding: 000007
   Shop #: WSC 00066 000 00119
   ASAM Dataset: EV_Immo_UDS_VDD_RM09 A03710
   ROD: EV_Immo_UDS_VDD_RM09_VW32.rod
   VCID: 6A86A8CE8CF5AA7A313-803E

No fault code found.

-------------------------------------------------------------------------------
Address 2B: Steer. Col. Lock (J764)       Labels:* 5K0-905-861.clb
   Part No SW: 5K0 905 861 C    HW: 5K0 905 861 C
   Component: ELV-PQ35      H21 0240
   Revision: 00000000    Serial number: 14000194518002
   Coding: 4900000000000000
   Shop #: WSC 00066 000 00119
   ASAM Dataset: EV_ELVMarquMPVW36X A01001
   ROD: EV_ELVMarquMPVW36X_VW32.rod
   VCID: 30327AA66AA910AA3F7-8064

No fault code found.

-------------------------------------------------------------------------------
Address 2E: Media Player 3
Cannot be reached

-------------------------------------------------------------------------------
Address 37: Navigation (J794)       Labels:| 1K0-035-27x-37.clb
   Part No SW: 1Q0 035 274 B    HW: 1Q0 035 274 B
   Component: RNS315-NAR    H81 0500
   Serial number: VWZAZ2P0409866
   Coding: 040004610200060000008000
   Shop #: WSC 00066 000 00119
   ASAM Dataset: EV_RNS315NARV2UDS 001705
   ROD: EV_RNS315NARV2UDS_VW32.rod
   VCID: 290497C249736162F89-807C

   Data carrier:
   Subsystem 1 - Part No: 3AA 919 866 B
   Component: NAR_V10  0072

1 Fault Found:
1048669 - Tuner for Satellite Radio
          B11CF 53 [00001001] - Deactivated
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 7
                    Fault Frequency: 1
                    Reset counter: 99
                    Mileage: 270196 km
                    Date: 2110.14.07
                    Time: 09:48:56


-------------------------------------------------------------------------------
Address 44: Steering Assist        Labels: 1K0-909-14x-GEN3.clb
   Part No: 1K0 909 144 R
   Component: EPS_ZFLS Kl. 306    3501
   Revision: 00H22000  
   Shop #: WSC 06307 004 1048576
   VCID: 39244782B553D1E2889-806C

No fault code found.

-------------------------------------------------------------------------------
Address 75: Telematics (J949)       Labels:| 12E-035-284.clb
   Part No SW: 561 035 285     HW: 561 035 285
   Component: OCULowUSA     014 0102
   Serial number: 000003554140525 Dataset Number: V03935196FH 0010
   Coding: 02630102C2423A107F1606000000
   Shop #: WSC 01383 790 50316
   ASAM Dataset: EV_OCULow 001010
   ROD: EV_OCULow_001_VW12.rod
   VCID: 53F8152A3B7F0BB2625-8006

1 Fault Found:
2103041 - Control Module
          B1788 F0 [00001001] - Start Prohibition Deactivated
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 8
                    Fault Frequency: 1
                    Reset counter: 203
                    Mileage: 295872 km
                    Date: 2127.14.17
                    Time: 06:19:13


-------------------------------------------------------------------------------
Address 77: Telephone (J412)       Labels:| 5N0-035-729.clb
   Part No SW: 5N0 035 729 A    HW: 5N0 035 729 A
   Component: TELEFON       H05 0592
   Revision: 1B001001    Serial number: 00007666315467 Dataset Number: 5N0035729A  0001
   Coding: 0A100300A0010110
   Shop #: WSC 01383 790 50316
   ASAM Dataset: EV_UHVUMI 001007
   ROD: EV_UHVUMI.rod
   VCID: 2E0E64DE709D065A2DB-807A

No fault code found.

End----------(Elapsed Time: 02:42, VBatt start/end: 12.2V/12.3V)-----------


Data during driving:

View attachment 3667
Code:
Click to expand...

There is a near constant and reasonable request from HVAC for the fan to run.

When AC and Auto Box are involved there will always be a "compromise" between them on what speed the fan(s) are run at.

So it follows that when there is a compromise that the whole strategy is compromised.

Did you know many Hybrids have 2 separate cooling systems - Possibly a valid reason for that ?
 
   #11  
Uwe

Uwe

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Dr Sheldon said:
Did you know many Hybrids have 2 separate cooling systems - Possibly a valid reason for that ?
Click to expand...
True, but this isn't a hybrid. It's an Mk.6 Golf, with a sedan-style trunk/boot.

-Uwe-
 
   #12  
M

macasoft

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SaVAGeSoot said:
Which temp sensor are you reading?
Have you compared the one on the rad outlet to the one on the engine to the oil temp? This alone should allow you to focus on the problem area (if there is one)
Click to expand...

Upfront, this was my initial issue: "2015 Jetta SE 1.8 TSI: When I start the car and let it warm up, the fan ramps up high for a couple seconds and rev down. I don't see any specific fault code below that would indicate any issue."

When I drove the car a couple days back, I saw this fan fluctuation. I collected more data today data. I started from a cold engine, then drive about ~10 min with AC on, heating. The fan never kicked in. I just show the first and last data points, in between it was a monotonous change or the temperature plateaued. No fluctuations in Coolant fan 1 activation, %.

The only curious thing I saw was the -48oC for the coolant temp at radiator output specified value, but that is the same for my other (2016 Jetta SEL 1.8 TSI) as well.

I would say that I close the case down for now... I started this thread as my radiator fan kicked in even for a cold engine, but I cannot reproduce. I just wait,

Thank you ALL FOR THE TIME AND ENERGY YOU PUT INTO THIS. If you want, I can collect some more data, I just don't see the error I used to see. At least I am glad that I had some proof a couple days ago that this happens sometimes, I just don't imagine it :) Because I can only monitor 12 channels at once, if you tell me what IDE numbers to monitor, I am glad to do that. I monitored the ones I thought they are relevant.


1764536069741.png
 
   #13  
M

macasoft

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Uwe said:
Question: What mode is your climate control in? Does this behavior persist if you completely shut down the A/C? You generally need to put it in ECON mode to do that.

-Uwe-
Click to expand...

Thank you Uwe. Last week I realized my auxiliary fan was stuck. I replaced it, seems all the problem is gone now.

Thank you all for your time.
 
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