ABS and ESP light keep on

[Nicholaslo]

Mine is a 2003 s3 8l bam, the ESP and ABS light come on last night!
After check by the VAGCOM, it shows the fault code
01324 (J492) Heldex issue,
00538 voltage issue,
01279(G251)senor issue,
01542(G202)senor issue.

I clear the code and the Heldex and voltage problems remained, but the G202 and G251 are gone, is it possible caused by the G202,G251 senor rather than the hedlex fault?

Thanks for helping

 

[<tuffty/>]

Mine is a 2003 s3 8l bam, the ESP and ABS light come on last night!
After check by the VAGCOM, it shows the fault code
01324 (J492) Heldex issue,

01324 - Ross-Tech Wiki

wiki.ross-tech.com

Fairly common to get this fault code but doesn't always mean that AWD is disabled... you would know if it was as the front wheels would spin on hard acceleration in 1st/2nd

Have a read of this...

Haldex not working? No communication etc? Look inside

If you have Haldex issues... check out these pictures of an S3 in here yesterday with only fwd Usual Earth strap broken and very corroded generally around the fixing.. Fixed by making up a new earth lead and replacing it. Also... Check connectors for corroded pins.. Replacing...

www.audi-sport.net

00538 voltage issue,

00538 - Ross-Tech Wiki

wiki.ross-tech.com

Without the correct context from VCDS then it could be anything from that list...

01279(G251)senor issue,

01279 - Ross-Tech Wiki

wiki.ross-tech.com

01542(G202)senor issue.

01542 - Ross-Tech Wiki

wiki.ross-tech.com

Both the above faults are why your ESP light was on...

I clear the code and the Heldex and voltage problems remained, but the G202 and G251 are gone, is it possible caused by the G202,G251 senor rather than the hedlex fault?

Without context of the voltage fault (from the Ross Tech article it suggests this can happen to multiple modules) then its difficult to say what the issue is...

<tuffty/>


Thanks for helping

 

[Nicholaslo]

Thank you so much, I’m trying to replace the two sensor to see what I can got