P0321 error code and a glow plug light

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MikeTDI2.0

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Hi Forum, New here, 2011 Jetta TDI manual trans, I'll try to post an auto scan here now but here are the symptoms. I have been getting some intermittent stutters at highway speeds (a few times) and then on a 30deg F morning I got a bunch of stuttering and loss of power a few minutes from the house with a glow plug light. I turned around went home and parked the car. The ross-tech cable gave me a p0321 code. Below is my autoscan. Thank you in advance if anyone has any suggestions. I am a little hesitant to start the car because about a year ago we had the glow plug light come on after the car died from a blown up HPFP.

Code:
Saturday,11,January,2025,12:59:52:29627
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 24.7.1.0 (x64)
Data version: 20240919 DS356.3
www.Ross-Tech.com


VIN: 3VWML7AJ7BM632029   License Plate:


Chassis Type: AJ-VW36 (7N0)
Scan: 01 03 08 09 15 16 17 19 1C 25 37 42 44 46 52 56 62 72 77

VIN: 3VWML7AJ7BM632029   Mileage: 270470km-168062miles

01-Engine -- Status: Malfunction 0010
03-ABS Brakes -- Status: OK 0000
04-Steering Angle -- 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
1C-Position Sensing -- Status: OK 0000
25-Immobilizer -- Status: OK 0000
37-Navigation -- Status: Malfunction 0010
42-Door Elect, Driver -- Status: OK 0000
44-Steering Assist -- Status: OK 0000
46-Central Conv. -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
56-Radio -- Status: Malfunction 0010
62-Door, Rear Left -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
77-Telephone -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine (CJA)       Labels: 03L-906-022-CBE.clb
   Part No SW: 03L 997 030 C    HW: 03L 906 019 DA
   Component: R4 2.0l TDI G000SG  9983 
   Revision: 12H08---    Serial number:              
   Coding: 0050072
   Shop #: WSC 84309 034 543113
   VCID: 2E02D6116C107ECAFD7-807A
   VINID: 0E69DD70745A1D27460C200224AEAE0719

1 Fault Found:
000801 - Engine Speed Sensor (G28)
               P0321 - 000 - Implausible Signal
             Freeze Frame:
                    Fault Status: 01100000
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 255
                    Mileage: 270474 km
                    Time Indication: 0
                    Date: 2019.06.04.
                    Time: 06:43:58

             Freeze Frame:
                    RPM: 1909 /min
                    Speed: 76.0 km/h
                    Voltage: 14.36 V
                    Temperature: 34.2°C
                    Idle Stabilization: 0.0°KW
                    RPM: 980 /min
                    (no units): 1.0

Readiness: 0 0 0 0 0

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels:. 1K0-907-379-60EC1F.clb
   Part No SW: 1K0 907 379 BC    HW: 1K0 907 379 BC
   Component: ESP MK60EC1   H30 0106 
   Revision: 00H30001   
   Coding: 114B600C492500FC880B06E692220042B70000
   Shop #: WSC 00066 000 00000
   VCID: 74B60479CEBC141A4B3-8020

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC (J301)       Labels:| 3C8-907-336.clb
   Part No SW: 3C8 907 336 AJ    HW: 3C8 907 336 AJ
   Component: Climatic      H14 0305 
   Revision: 00009001   
   Coding: 0000001002
   Shop #: WSC 00066 000 00149
   ASAM Dataset: EV_Climatic A01005
   ROD: EV_ClimaBasis_VW36.rod
   VCID: 75B0397DC5460D127CD-8020

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:. 1K0-937-08x-09.clb
   Part No SW: 5K0 937 084 E    HW: 5K0 937 084 E
   Component: BCM PQ35 B    011 1035 
   Revision: BG011001   
   Coding: 2D380E1A902F3EC4008800816000004401000086535D8560648020000040
   Shop #: WSC 56835 002 1048576
   VCID: 3436C4798E3C541A8B3-8060

   Subsystem 1 - Part No: 1K1 955 119 F  Labels: 1KX-955-119.CLB
   Component: Wischer 27091  21  0512
   Coding: 009795

1 Fault Found:
01504 - Bulb for License-Plate Light (X)
            010 - Open or Short to Plus - Intermittent
             Freeze Frame:
                    Fault Status: 00101010
                    Fault Priority: 2
                    Fault Frequency: 59
                    Reset counter: 149
                    Mileage: 261006 km
                    Time Indication: 0
                    Date: 2019.06.04.
                    Time: 18:10:45

             Freeze Frame:
                        Term 15 On
                    Voltage: 14.20 V
                        ON
                        ON
                        OFF
                        OFF
                        OFF


-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:| 5K0-959-655.clb
   Part No SW: 5K0 959 655 B    HW: 5K0 959 655 B
   Component: AirbagVW10G   021 0706 
   Serial number: 003C4R00UL7I   Dataset Number: 1KM003v__B_ 0027
   Coding: 00003044
   Shop #: WSC 00066 000 00000
   ASAM Dataset: EV_AirbaVW10SMEVW360 A01012
   ROD: EV_AirbaVW10SMEVW360.rod
   VCID: 3928F54DA9DEA972585-806C

   Seat occupied recognition:
   Subsystem 1 - Part No SW: 1KM 959 339     HW: 1KM 959 339
   Component: BF-Gewichtss.  007 0001
   Serial number: ---0000R--0005H1GQ00

   Crash sensor for side airbag: driver side:
   Subsystem 2 - Part No SW: 1KM 955 557     HW: 1KM 955 557
   Component: S.Sens.Fahr.V  H01 ----
   Serial number: 3572MSME71095555ZZZU

   Front Passenger's Side Airbag Crash Sensor:
   Subsystem 3 - Part No SW: 1KM 955 557     HW: 1KM 955 557
   Component: S.Sens.Beif.V  H01 ----
   Serial number: 3582MSME54075555ZZZU

   Rear Side Airbag Crash Sensor (on driver's side):
   Component: S.Sens.Fahr.H  --- ----
   Serial number: 3511HSME044C6322ZZZE

   Passenger side rear thorax airbag crash sensor:
   Component: S.Sens.Beif.H  --- ----
   Serial number: 3521HSME4E5C6322ZZZU

   Crash sensor for front airbag: driver side:
   Component: F.Sens.Fahr  --- ----
   Serial number: 35527SME4D400423ZZZ6

   Crash sensor for front airbag: front passenger side:
   Component: F.Sens.Beif  --- ----
   Serial number: 35627SME00430423ZZZ-

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel (J527)       Labels:| 5K0-953-569.clb
   Part No SW: 5K0 953 507 BC    HW: 5K0 953 549 E
   Component: Lenks.Modul   007 0080 
   Revision: --------    Serial number:  90422JGT000OV Dataset Number: 5K0953507BC D005
   Coding: 108A140000
   Shop #: WSC 00066 000 00184
   ASAM Dataset: EV_SMLSNGKUDS A05001
   ROD: EV_SMLSNGKUDS_A05.rod
   VCID: 72BA0261B4281A2A59F-8026

   Multifunction steering wheel control module:
   Subsystem 1 - Part No SW: 5K0 959 542     HW: 5K0 959 542   Labels: 3C8-959-537.CLB
   Component: E221__MFL-TAS  H05 0010
   Serial number: 0111877            
   Coding: 820000

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:| 5K0-920-xxx-17.clb-SRI1
   Part No SW: 5K0 920 971 C    HW: 5K0 920 971 C
   Component: KOMBI         H03 0406 
   Serial number: 00000000000000
   Coding: 270F01
   Shop #: WSC 00066 000 00184
   ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A04089
   ROD: EV_Kombi_UDS_VDD_RM09_004_VW32.rod
   VCID: 2F3CCB15679A77C2F61-807A

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway        Labels:. 7N0-907-530-V1.clb
   Part No SW: 7N0 907 530     HW: 1K0 907 951
   Component: J533  Gateway   H27 5603 
   Revision:   H27       Serial number: 28091001210662
   Coding: E9807F0640160200002002
   Shop #: WSC 00066 000 00000
   VCID: 6D80111DA196C5D284D-8038

No fault code found.

-------------------------------------------------------------------------------
Address 1C: Position Sensing        Labels: 1Kx-919-xxx-1C.lbl
   Part No SW: 5N0 919 879     HW: 5N0 919 879
   Component: Kompass         001 0001 
   Revision: 00001000    Serial number: 1225223RA15X06
   Coding: 0000002
   Shop #: WSC 00066 000 00000
   VCID: 7EA22651FCF04E4A2D7-802A

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          H03 0406 
   Serial number:              
   Coding: 000000
   Shop #: WSC 00000 000 00000
   ASAM Dataset: EV_Immo_UDS_VDD_RM09 A03008
   ROD: EV_Immo_UDS_VDD_RM09_VW23.rod
   VCID: 6A8A1A019CF8D2EAE1F-803E

No fault code found.

-------------------------------------------------------------------------------
Address 37: Navigation (J0506)       Labels:. 1T0-035-680.clb
   Part No SW: 3C0 035 684 C    HW: 3C0 035 684 C
   Component: RNS-MID       H04 1140 
   Revision: AB001001    Serial number: VWZ6Z7K6025053
   Coding: 040004000400008600
   Shop #: WSC 00066 000 00000
   VCID: 231437253BD2C3A2629-8076

1 Fault Found:
03181 - Internal Error SDARS Module
            000 - -
             Freeze Frame:
                    Fault Status: 01100000
                    Fault Priority: 5
                    Fault Frequency: 254
                    Reset counter: 109
                    Mileage: 260712 km
                    Time Indication: 0


-------------------------------------------------------------------------------
Address 42: Door Elect, Driver (J386)       Labels:| 3C0-959-70X-GEN4.clb
   Part No SW: 3C0 959 701 B    HW: 3C0 959 793
   Component: TUER-SG FT    002 0307 
   Revision: 13101005    Serial number: 0001414342
   Coding: 0004B5
   Shop #: WSC 01383 790 50316
   ASAM Dataset: EV_DCU42BroseDriveSide A03004
   ROD: EV_DCU42BroseDriveSide_VW32.rod
   VCID: 270C23354F6A2F823E1-8072

   Slave Driver:
   Subsystem 1 - Part No SW: 1K0 959 703 AH    HW: 1K0 959 795 T  Labels: 1K0-959-70X-GEN4.CLB
   Component: J388__TSG-HL  006 1401
   Serial number: 00000005135935     
   Coding: 000490

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist        Labels: 1K0-909-14x-GEN3.clb
   Part No: 1K0 909 144 J
   Component: EPS_ZFLS Kl. 70     3001 
   Revision: 00H17000   
   Shop #: WSC 02069 000 90108
   VCID: 3138CD6D7D2E6132E05-8064

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. (J387)       Labels:| 3C0-959-70X-GEN4.clb
   Part No SW: 3C0 959 702 B    HW: 3C0 959 792
   Component: TUER-SG BT    002 0307 
   Revision: 15101005    Serial number: 0001380100
   Coding: 0004B4
   Shop #: WSC 01383 790 50316
   ASAM Dataset: EV_DCU52BrosePasseSide A03004
   ROD: EV_DCU52BrosePasseSide_VW32.rod
   VCID: 280E2009427420FA37B-807C

   Slave Passenger:
   Subsystem 1 - Part No SW: 1K0 959 704 AH    HW: 1K0 959 794 T  Labels: 1K0-959-70X-GEN4.CLB
   Component: J389__TSG-HR  006 1401
   Serial number: 00000005190536     
   Coding: 000490

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio (J0506)       Labels:. 1T0-035-680.clb
   Part No SW: 3C0 035 684 C    HW: 3C0 035 684 C
   Component: RNS-MID       H04 1140 
   Revision: AB001001    Serial number: VWZ6Z7K6025053
   Coding: 040004000400008600
   Shop #: WSC 00066 000 00000
   VCID: 231437253BD2C3A2629-8076

1 Fault Found:
03181 - Internal Error SDARS Module
            000 - -
             Freeze Frame:
                    Fault Status: 01100000
                    Fault Priority: 5
                    Fault Frequency: 254
                    Reset counter: 109
                    Mileage: 260712 km
                    Time Indication: 0


-------------------------------------------------------------------------------
Address 77: Telephone (J412)       Labels:| 7P6-035-730.clb
   Part No SW: 7P6 035 730 C    HW: 7P6 035 730 C
   Component: TELEFON       H05 0440 
   Revision: 1B001001    Serial number: 00007668296300 Dataset Number: 7P6035730C  0001
   Coding: 0A00000000010100
   Shop #: WSC 01383 790 50316
   ASAM Dataset: UHVNA A01007
   ROD: UHVNA.rod
   VCID: 323AC26174A85A2A99F-8066

No fault code found.

End----------(Elapsed Time: 01:22, VBatt start/end: 12.1V/12.1V)-----------
 
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   #2  

Dr Sheldon

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1 Fault Found:
000801 - Engine Speed Sensor (G28)
P0321 - 000 - Implausible Signal

As long as the wiring and the plug are ok then get a new one and fit it !! Common failure on that car !!

Be sure to get one from the VW Dealer - Dont go online and fall for the OEM bollocks !!
 
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   #3  

MikeTDI2.0

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Okay, Thank you. That makes sense to try the obvious part that it says is the problem is. It's probably okay to drive from the street to the driveway to work on? I guess it's probably just trying to give cylinders fuel at wrong time?
 
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Dr Sheldon

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It's probably okay to drive from the street to the driveway to work on? I guess it's probably just trying to give cylinders fuel at wrong time?




When G28 fails the Engine will instantly die and will not start !!! Injection will be paralysed - Not a case of fuelling at the wrong time.
 
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RGH0

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The freeze frame data appears to be from 2019 ? Is the cars reported date wrong or is it an old problem ? If G28 failure should stop the car instantly and you drove it home then maybe G28 failure is not your problem ? Maybe worthwhile clearing the codes (you have another one from the same 2019 date) and running the car in the drive and seeing if the problem sets a new DTC.
 
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Dr Sheldon

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The freeze frame data appears to be from 2019 ? Is the cars reported date wrong
These dates are often wrong and not to be relied upon !!

Looking at the mileage in FF Data is more reliable.

Saturday,11,January,2025,12:59:52:29627

VIN: 3VWML7AJ7BM632029 Mileage: 270470km-168062miles
-------------------------------------------------------------------------------
Address 01: Engine (CJA) Labels: 03L-906-022-CBE.clb

000801 - Engine Speed Sensor (G28)
P0321 - 000 - Implausible Signal

Freeze Frame:
Mileage: 270474 km
Time Indication: 0
Date: 2019.06.04.
 
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   #7  

Uwe

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These dates are often wrong and not to be relied upon !!
Yep. Several reasons for this, for example, no handy way of resetting the date in some cars after the battery has been changed, or even if there is, simply not doing it.

-Uwe-
 
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Dr Sheldon

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Yep. Several reasons for this, for example, no handy way of resetting the date in some cars after the battery has been changed, or even if there is, simply not doing it.

-Uwe-
I am not so sure of that !

I remember some 20 years ago seeing this anomaly, setting the date and time in the cluster and still no change to the date in FF with new DTC's introduced.
 
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MikeTDI2.0

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Thanks for the responses. The date must be wrong. I'll check it against the mileage a little later. I started the car ups yesterday to put it in the driveway to check it out and it sounded fine and the light had cleared on its own. I'm going to test drive it this afternoon, in a few minutes, and see if maybe it just was a hiccup. I'll keep you guys posted and thanks again.
 
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MikeTDI2.0

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I took it on a 45 mile test ride and it ran fine and the light stayed off. I'll check for new codes tomorrow. I guess I may have hit the panic button. Possibly it is a symptom of something to come. I'll let you know if it comes back and thanks again for the responses.
 
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Dr Sheldon

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I'm going to test drive it this afternoon, in a few minutes, and see if maybe it just was a hiccup.

I would be inclined to replace G28 now.

Gradually going from "hiccup" to Complete failure is quite common. I would say that is likely to fail, and soon, when you need your car most and it can fail at any time !!
 
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