MK5 Golf GTI

All Things Mk5 => How to Guides / Troubleshooting => Topic started by: swgti on November 11, 2012, 09:05:30 am

Title: Mass air flow sensor - Passat 20v related.
Post by: swgti on November 11, 2012, 09:05:30 am

Warning light and ecu check are showing up a intermittent fault with the MAF on my 2003 Passat 2.0 20v, this probably explains the stalling issue I sometimes have too.

Is it just a case of simply replacing the MAF unit or is there any setting up I need to do afterwards?

Also once replaced will the warning light go away on its own or will I need to reset it? can this be done manually by twiddling dash stalks etc like you do to reset service message?

Title: Re: Mass air flow sensor - Passat 20v related.
Post by: GrayMK5GTI on November 11, 2012, 12:37:30 pm

IIRC some people recommend removing the battery for 30mins to allow the ECU to recalibrate afterwards.

Title: Re: Mass air flow sensor - Passat 20v related.
Post by: bacillus on November 11, 2012, 01:55:36 pm

I would just replace the maf.
iirc if the car goes through 3 cycles of running without getting a same fault code then the dash warning light should extinguish itself though the fault code will remain stored in the ecu.