Hi All,

My B9 Avant's dash has lit up early for christmas - everything from airbags through to cruise control (all orange, no red). Most of the lights are likely being raised by the ABS fault (pre-sense, parking sensors, ESC, tyre pressure for example).

Scanning it has given a number of codes listed below.

I'm leaning towards either an issue with a wire harness somewhere or a dodgy ECU (pretty uncommon from what I understand) - does anyone have any advice on where to start troubleshooting? (preferably one that doesn't involve shelling out ££££ for an ECU replacement...)

Errors:

CAN network gateway:
8531970 - Static current: too large

Engine:
23410 - Invalid Data Received From: Anti-Lock Brake System Control Module
24613 - Invalid Data Received From Restraints Control Module
04660 - ABS Control Module: Check DTC memory

ABS:
4530176 - Multi-axle acceleration sender
4530178 - Multi-axle acceleration sender
4530180 - Multi-axle acceleration sender
467968 - Databus implausible message

Power steering:
16640 - Databus error value received
17664 - Databus error value received

Airbags:
10490368 - Data record implausible
00305 - Faulty control module

Infotainment system:
03084 - GSM antenna 2: Open circuit
03086 - Antenna for telephone mount: electrical error
07199 - Function restriction due to missing message

Central electronics:
196758 - Databus error value received
196762 - Databus error value received
196900 - Databus error value received

Body/convenience system:
65760 - Databus error value received

Driver assist front sensor:
1123173 - Databus error value received

Battery voltage ignition = 12.4V -5.5A
Battery voltage running = 15.2V 12.4A

If you got this far, thanks in advance

 

From my understanding it looks like the airbag module has failed. The codes in the ABS module are for defective multi-axis accelerometers (which I believe are part of the airbag module), the rest of the codes seem to be communication errors related to the faults in the ABS module and airbag module.

The codes in the infotainment system are common, I've had them since I've owned my car (as have two other people with B9s who I personally know) and they don't seem to cause any issues. The CAN gateway static current fault means that something is drawing power when the car is parked. Nothing to worry about if you have a dash cam or other device fitted

 

Thanks for your reply. This is where I'm leading towards after spending the weekend poking and prodding.

Static current fault - will see if it's still present after repairing/replacing the airbag module. There's no dash cam or other third-party device fitted so unsure what's causing the drain at the moment.

 

Hi.Same problem with my one.Went to garage and they said it's Airbag Control Module.I replaced(1.200 pounds)and everithing it's almost ok.Almost because i don't have any lights on dash,no errors but my ESP doesn't work properly.Also pre sense .It's like they are in slow motion and activated too late.Wheels are spining on fast start,i have light from ESP but wheels are spining and suspension knocking on my chasis.Pre sense acting very late.The garage sent me to dealer.