Air bag light illuminated

[GHB823]

Need some advice please- own a A4 avant B8 S-line 2.7 TDI multitronic.

Had gearbox problem so changed that to a second hand part which was installed by my mechanic. The ECU code on gearbox wasn't matching up so was sent to another garage with the software to re-code it. When it came back the Air Bag light had come on. 

On VagCom code is reading J234 no signal/communication from Air bag ECU. 

Any advice as to what caused this? 

 

[Stevey Y]

8 hours ago, GHB823 said:

Need some advice please- own a A4 avant B8 S-line 2.7 TDI multitronic.

Had gearbox problem so changed that to a second hand part which was installed by my mechanic. The ECU code on gearbox wasn't matching up so was sent to another garage with the software to re-code it. When it came back the Air Bag light had come on. 

On VagCom code is reading J234 no signal/communication from Air bag ECU. 

Any advice as to what caused this? 

 

Hi it sounds like they might have spiked the air bag module.

Steve.

[Steve Q]

I'd be getting it back to the garage who did the coding of the module