MAF problems

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NigelY
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I drive a: GT 2.0 TSI
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MAF problems

Post by NigelY »

Got my car scanned as had abs light, esr light and flashing brake warning light. Turns out it is a MAF fault. I’ve changed the maf for a known second hand version still the same.
Tried clearing codes with a reader and it says cleared but fault still there? Not getting any change in voltage on the maf when engine revved?
Car runs and starts fine, just loads of beeps and warning lights...
Any ideas?
Cuprabob
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Re: MAF problems

Post by Cuprabob »

A faulty MAF would not trigger those warning lights. If there is a MAF fault code it's just a coincidence. It's possible the code reader is not able to read codes for the ABS controller, if it wasn't VCDS that was used.

It could be a faulty wheel speed sensor or the ABS controller itself. There is also a recall on the ABS controller for the early cars.

https://www.sciroccocentral.co.uk/forum ... Abs+recall" onclick="window.open(this.href);return false;
NigelY
Posts: 4
Joined: Fri Jun 11, 2021 1:39 pm
I drive a: GT 2.0 TSI
In: Deep Black
With a: Manual box
Options: Bought 2nd hand. Pano Roof and Dyna Audio

Re: MAF problems

Post by NigelY »

Thanks. Thought it was odd tbh.
Garage used a snap on reader, so thought that would be up to date.
Car was registered in March 2009 if that makes a difference re ABS controller.
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Roy_01
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Re: MAF problems

Post by Roy_01 »

Yes that matters

http://www.sciroccocentral.co.uk/forum/ ... ll#p216137" onclick="window.open(this.href);return false;
NigelY
Posts: 4
Joined: Fri Jun 11, 2021 1:39 pm
I drive a: GT 2.0 TSI
In: Deep Black
With a: Manual box
Options: Bought 2nd hand. Pano Roof and Dyna Audio

Re: MAF problems

Post by NigelY »

Well it’s definitely the Abs controller confirmed by a proper scan. The Maf is also faulty apparently although car runs fine. Will have to check if mine has been recalled. Presume phone a dealer?
Cuprabob
Posts: 5014
Joined: Sat Aug 07, 2010 2:31 pm
I drive a: GT 2.0 TDI 170/184
In: Rising Blue
With a: Manual box
Options: Panoramic Roof, 19" Black Luganos, Vienna Leather, Parking Sensors, DAB, Dynaudio, Bluetooth, Cruise, Folding Mirrors, Xenons
Location: S/W Scotland

Re: MAF problems

Post by Cuprabob »

Yes, give dealer a call, give them your VIN and they will tell you if it's one of the affected cars and whether the update has been done.
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Roy_01
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I drive a: 2.0 TDI 140
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With a: DSG box

Re: MAF problems

Post by Roy_01 »

The abs can alter the MAF signal for ESC.
This way it can control the throttle so might be related.
NigelY
Posts: 4
Joined: Fri Jun 11, 2021 1:39 pm
I drive a: GT 2.0 TSI
In: Deep Black
With a: Manual box
Options: Bought 2nd hand. Pano Roof and Dyna Audio

Re: MAF problems

Post by NigelY »

Quick update on this thread. After proper diagnosis Abs controller failure plus PCV valve faulty. Garage that I bought the car from has had both replaced. Genuine VW Parts as well. No cost to me, think I had a good result there.
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