AUDI 2003 A6 S-Line ABS BUS no communication

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May 25, 2018 | 09:45 AM

prince13

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Joined: May 2018

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AUDI 2003 A6 S-Line ABS BUS no communication

Hi Everyone,

I have bought a 2003 A6 that has the ESP light on. No other light as some of the other thread have ESP Light + Brake light + 3 Beeps. None of that. Just the ESP light which doesn't go away ever.

I took it to a mechanic and he connected his computer and we got these codes:
18057 Powertrain data bu missing message from ABS ECU P1649
18031 Powertrain data bus no Communication P1623

My mechanic thinks its a faulty ABS module and would need a replacement.

I am trying to look for other options as its really hard to find and expensive for a used part. Are there any other options i have?

And another thing: My cars traction control and all wheel drive system works just fine. No issues at all. Its just the light thats on. Could this be an easy fix? like Fuse or loose wire somewhere?

Thanks for any help anyone can give me.

May 25, 2018 | 01:50 PM

clancy

AudiWorld Senior Member

Joined: Jan 2004

Posts: 1,417

Likes: 28

From: Ocean Isle Beach NC

Contact this company. https://modulemaster.com/rebuilds/. Or someone similar. They know thes cars and the ABS systems. Chances are they can repair this for much less.

May 25, 2018 | 02:07 PM

Harleyguy

AudiWorld Senior Member

Joined: Jan 2015

Posts: 1,186

Likes: 43

From: Sierra Vista, AZ

What Clancy said. Call them first and give them the particulars, part# , year and model, etc. They guarantee their work and are A+++ in my book. Great to work with.