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 A3 1.8T Quattro ESP Light always on View next topic
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danny9326
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Car: B5
Power: Standard
Torque: Standard

Joined: 07 Dec 2012
Posts: 411

Location: W.YORKS

PostPosted: Fri May 09, 2014 9:49 pm  Reply with quoteBack to top

Hi, I have just been to look at an A3 1.8t Quattro with a friend the car itself is spot on just the esp light is on all time, now if it was esp and abs I would be thing maf sensor but it is just esp I vag commed it and got this
Control module for all wheel drive (j492)
004 No Signal/Communication
Fault code no:01324.

What's the worse thing this could be because I quick google doesn't look good

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Dan
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danny9326
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Car: B5
Power: Standard
Torque: Standard

Joined: 07 Dec 2012
Posts: 411

Location: W.YORKS

PostPosted: Fri May 09, 2014 9:52 pm Reply with quoteBack to top

Also does a car fail mot for this light been on, what's the worse thing that happens driving it with it on

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Dan
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HPsauce
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Joined: 13 Mar 2013
Posts: 1427


PostPosted: Fri May 09, 2014 9:56 pm Reply with quoteBack to top

You need to check an authoritative MOT information source, but I believe this is build-date related. On "older" cars it's just an observation, but newer (2012 ish I think?) it's a fail.
What age is this car?
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danny9326
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Car: B5
Power: Standard
Torque: Standard

Joined: 07 Dec 2012
Posts: 411

Location: W.YORKS

PostPosted: Fri May 09, 2014 10:57 pm Reply with quoteBack to top

2002 mate

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Dan
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HPsauce
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Joined: 13 Mar 2013
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PostPosted: Fri May 09, 2014 11:10 pm Reply with quoteBack to top

Sounds similar to this: http://www.vwaudiforum.co.uk/foru...ntrol-Module-for-All-Wheel-Drive-(J492)-Error
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colicabcadam
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Car: B5 RS4
Power: 679 bhp
Torque: 583 lbft

Joined: 11 Nov 2011
Posts: 3864


PostPosted: Fri May 09, 2014 11:29 pm Reply with quoteBack to top

gay quattro

it'll most probably be the earth strap from the haldex unit

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danny9326
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Car: B5
Power: Standard
Torque: Standard

Joined: 07 Dec 2012
Posts: 411

Location: W.YORKS

PostPosted: Sat May 10, 2014 1:29 am Reply with quoteBack to top

What is the worse that can happen if this issue cant be fixed?
What does it actually do when the esp light is on permanantly

Thanks for help  

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brasiliangringo
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Car: S8 Final Edition
Power: 360
Torque: 430 Nm

Joined: 25 Feb 2011
Posts: 1826

Location: Blighty

PostPosted: Sat May 10, 2014 9:50 am Reply with quoteBack to top

Pretty simple, ecu is shot or the power to/from it is ie as mentioned above earth strap or another cable into it that in simple speak is broken, hence the no signal code. The ESP is on because that is not functioning and is an integral part of the ESP system. Its not always the MAF at fault
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colicabcadam
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Car: B5 RS4
Power: 679 bhp
Torque: 583 lbft

Joined: 11 Nov 2011
Posts: 3864


PostPosted: Sat May 10, 2014 10:17 am Reply with quoteBack to top

btw - when he says ecu, he means the haldex control unit

so it's either fix the power to that or replace the module, this is not MAF related at all as it would throw more codes both in the engine module and abs module

if you buy it as is now you will be buying a front wheel drive car that could cost at most imo a second hand haldex controller and some labour to fix it

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