Intermittant ABS/ESP light and other issues related

[Steve B5 Biker]

Hi firstly a brief car history.
A4 B5 Avant 2.5 tdi
18" BBS REPS
remapped, fmic
coilovers,custom exhaust.
Carbon roof etc....


Have been getting ABS light coming on intermitantly over a few weeks now ,
some times as soon as you fire up the engine, yet other times i can drive 10 miles before it rears its ugly head,sometimes it stays on untill ive comleted my journey,yet other times it just resets mid journey CONFUSED
ive had a friends vagcom on and its put up the following codes.

ABS=01203 Instrument panel electrical connections ?
ABS=18256 check dtc memory of ecu ?
also
Engine code 18259 Data bus powertrain,missing message from brake control menu ?

Any help or guidance from the Audi Gods.... would be a great help

Cheers in advance Steveb5biker

 

[Steve B5 Biker]

I realise this is a very common topic on here
just need a bit of guidance im guessing abs speed sensors maybe ?

 

[Mackers]

i have the same car,,, heard about the ABS rings "snapping" might be worth taking the wheels off and having a look, whilst rotating the cv joints.

 

[aragorn]

If it was speed sensors it'd tell you its speed sensors.

Looking at your fault codes, theres some comms issues between the ABS, ECU and Cluster...

Could be a failing ABS module, or corrosion in the wiring somewhere?

 

[Steve B5 Biker]

Hi Mackers ,thanks for that, the cars booked in monday,having new clutch,with solid flywheel conversion, service oil n all filters changed,pre M.O.T so will get abs checked out with my spanner man, gonna be an expensive couple of days lol..

 

[Steve B5 Biker]

Cheers for that Aragorn will get it checked out next week will keep u all posted....

 

[Mackers]

you got pics of ya FMIC, i'm toying with the idea

 

[Steve B5 Biker]

No pictures of instalation Mackers, sorry was already done when i bought the car, can try get some close up shots of it now but RS4 bumper may hide a lot of details....