On 26/02/2023 at 21:11, bigjohn said:

With multiple errors like that at once I feel this could be a low voltage issue. I suspect all is still not happy re battery and/or charging.

 

The flashing glow plug light indicates an engine management issue -which could also be voltage related.

 

 

 

 

 

Shouldn't be voltage problems, its a brand new battery and the glow plug was again flashing yesterday and plugging the OBD2 in, I extracted the for fault code 05286 and sent it to Carista for more info, the voltage recorded was 13.00V.

Car is booked in on Friday to have the throttle body cleaned so I'll be able to report back if that was the problem or not after a couple of days driving. Some days the start/stop system perfectly, then the next it cuts in a couple of times and then it stops and produces the error code and I have to start manually.

 

The error code 05286 is just a freeze frame of the engine data at the time the error P0121 occurred (Throttle body), this the information provided by Carista after sending them the report direct from the app.

 

05286 –

Freeze frame

Priority: 2

Malfunction frequency counter: 3

Unlearning counter: 255

Odometer reading: 126448 km

Engine rpm: 0.00 RPM

Normed load value: 0.0 %

Vehicle speed: 0.0 km/h

Coolant temperature: 59 °C

Intake air temperature: 17 °C

Ambient air pressure: 1020 mbar

Voltage terminal 30: 13.000 V

 

 

This morning I had another request from Carista support to do yet another scan of the cars ECU's and send them the report direct from the app, this what the scan produced, the same as before, no errors on anything apart from the TV Tuner, which despite throwing out these error codes, is actually working. I look forward to getting their analysis of the codes back in due course.

 

ECU info obtained with Carista 7.1 for Android:

VIN: TMBBF73T9E9021678

CAN network gateway
Part #: 7N0907530AL
Component: J533 Gateway
Software version: 1642
ASAM/ODX identifier: [none]
Coding: 353303 (hex)
[No fault codes]

Engine
Part #: 03L906018RQ
Component: R4 2.0l TDI
Software version: 9977
ASAM/ODX identifier: EV_ECM20TDI01103L906018RQ
Coding: 001D0032042501080000 (hex)
[No fault codes]

Transmission
Part #: 02E300062A
Component: GSG DSG AG6
Software version: [none]
ASAM/ODX identifier: [none]
Coding: 20 (decimal)
[No fault codes]

ABS
Part #: 1K0907379BL
Component: ESP MK60EC1
Software version: 0152
ASAM/ODX identifier: [none]
Coding: 863D6016092400FB611106EB90210092350150 (hex)
[No fault codes]

Power steering
Part #: 1K0909144R
Component: EPS_ZFLS Kl. 196
Software version: [none]
ASAM/ODX identifier: [none]
Coding: [none]
[No fault codes]

Steering angle
[ECU not present]

Steering wheel
Part #: 1K5953521AK
Component: LENKS.MODUL
Software version: 0140
ASAM/ODX identifier: EV_SMLSNGVOLWSXS
Coding: 0882140000 (hex)
[No fault codes]

Airbags
Part #: 3T0959655D
Component: J234__LDM VW10 H
Software version: [none]
ASAM/ODX identifier: [none]
Coding: 17485 (decimal)
[No fault codes]

Instrument cluster
Part #: 3T2920941M
Component: KOMBI
Software version: 0811
ASAM/ODX identifier: EV_Kombi_UDS_VDD_RM09
Coding: 410E01 (hex)
[No fault codes]

Navigation
Part #: 3T0035686C
Component: RNS-MID
Software version: 5274
ASAM/ODX identifier: -------------------------
Coding: 04060002000000A11000 (hex)
[No fault codes]

Radio
Part #: 3T0035686C
Component: RNS-MID
Software version: 5274
ASAM/ODX identifier: -------------------------
Coding: 04060002000000A11000 (hex)
[No fault codes]

Sound system
Part #: 5C6035456A
Component: KonzernAmp10K
Software version: 6813
ASAM/ODX identifier: EV_AudioVerst10KanalBNO1
Coding: [none]
[No fault codes]

TV tuner
Part #: 7L6919148A
Component: R0078 TVhybridDV
Software version: [none]
ASAM/ODX identifier: [none]
Coding: 3 (decimal)
Fault codes:
00464 Controller with display unit for radio and navigation (J503)
01299 Diagnostic Interface for Data Bus (J533)
03210 Video Connection red
03211 Video Connection green
03212 Video Connection blue
03213 Video Connection sync

Telephone
Part #: 3C8035730D
Component: Telefon
Software version: 0946
ASAM/ODX identifier: EV_UHVPremi
Coding: 020100000100010000000101 (hex)
[No fault codes]

Immobilizer
Part #: 5K0953234
Component: IMMO
Software version: 0811
ASAM/ODX identifier: EV_Immo_UDS_VDD_RM09
Coding: 000000 (hex)
[No fault codes]

Headlight aiming
Part #: 5M0907357F
Component: AFS-ECU
Software version: 0111
ASAM/ODX identifier: EV_HeadlRegulVWAFSPt
Coding: 01C600003F000000 (hex)
[No fault codes]

Heater & air conditioning
Part #: 3T0907044CJ
Component: Climatronic
Software version: 0709
ASAM/ODX identifier: EV_Climatronic
Coding: 0010080003 (hex)
[No fault codes]

Parking/steering assist
Part #: 3T0919475D
Component: PARKHILFE PLA
Software version: 0005
ASAM/ODX identifier: EV_EPHVA2CAS46X0000
Coding: 149301 (hex)
[No fault codes]

Central electronics
Part #: 1K0937087AN
Component: BCM PQ35 H+
Software version: 0779
ASAM/ODX identifier: [none]
Coding: 46990A26EC7BF1C0500800C171008DEC0F7000CD63208760E280C7040041 (hex)
[No fault codes]

Body/convenience system
[ECU not present]

Driver's door
Part #: 8X0959793H
Component: TSG FA
Software version: 0415
ASAM/ODX identifier: [none]
Coding: 011D0220DE01001000 (hex)
[No fault codes]

Front passenger's door
Part #: 8X0959792H
Component: TSG BF
Software version: 0415
ASAM/ODX identifier: [none]
Coding: 011D0220DE01001000 (hex)
[No fault codes]

Rear left door
Part #: 8X0959795D
Component: TSG HL
Software version: 0415
ASAM/ODX identifier: [none]
Coding: 010C00200001001000 (hex)
[No fault codes]

Rear right door
Part #: 8X0959795D
Component: TSG HR
Software version: 0415
ASAM/ODX identifier: [none]
Coding: 010C00200001001000 (hex)
[No fault codes]

Driver's seat
Part #: 3C8959760E
Component: Sitzmemory
Software version: 3001
ASAM/ODX identifier: [none]
Coding: 00003B (hex)
[No fault codes]

Battery regulator
Part #: 7N0907534
Component: Batt.regelung
Software version: 1642
ASAM/ODX identifier: [none]
Coding: 030F185A (hex)
[No fault codes]

I have had my throttle body cleaned by a local garage (Trinity, in Springfield Road, Chelmsford) and I have to say that they have done a good job, originally estimated an hour's work but due to a stubborn bolt it took almost 2 hours. The car is actually smoother on take off now as before sometimes it would snatch a bit and also the engine is idling around 800rpm, before it would fluctuate between 800 to 1000rpm. I'm also noticing that it gets into 4th gear a lot more now during town driving at speeds of 25mph, before it was nearer to 30mph, so fuel economy should be better as well. Time will tell on that front.

 

When I went to pick up my this afternoon, I was pleasantly surprised when I was informed that had a couple of photos for me to show what they found on removal and another showing how clean it was when they refitted it, I attach these below, and I'm amazed at the state it was in and can see why the OBD2 error report said that the body was giving an implausible reading, the gunk was preventing the flap from sitting correctly and thus giving the ECU an input that might suggest the engine might run at too high rpm if the start/stop system were to start the engine and the car shoot of at unexpected speed? Does that make sense?

An update on the topic for you, it has been a whole week since the body was cleaned, and I've done a fair bit of driving in that week, in traffic with the stop/start performing absolutely brilliantly, not missing a beat, stops instantly with no rough shudder and starts the same way. Power delivery is also perfectly smooth when pulling away from stationary, and the idle is once again nice at 800rpm.

 

So the video I found on YT was correct and also a big thank you to DEL80Y, it really was just the throttle body that needed cleaning.

Intersteing read this thread!

My stop start doesnt work at all even though the green brake like comes up on the dash! I might just start by removing and cleaning the throttle body would do no harm and might even improve performance!