MK5 Golf GTI

All Things Mk5 => How to Guides / Troubleshooting => Topic started by: cutchie on September 04, 2015, 09:28:02 pm

Title: underboost and 02 sensor faults
Post by: cutchie on September 04, 2015, 09:28:02 pm

Hello from n.Ireland! First post going to put a build thread up once I figure out how! Lol.

so I have an 05 mk5 gti performance mods decat downpipr and oversize ramair. I have a generic fault code reader which is given p0030 and p2243 (bank 1 sensor 1 heater control circuit and 02 sensor referance voltage faults) and replaceing the 02 sensor didn't help can anyone shed any light?

Also on probably unrelated note I got the car plugged in on a snapon reader and it was showing p0299 fault (underboost) I've changed the dumpvalve and cleaned the maf sensor also checked the pcv anyone seen this before? The car also backfires a lot especially when it's cold.

Any help on either subject would be greatly appreciated! Thanks!

Title: Re: underboost and 02 sensor faults
Post by: cutchie on September 09, 2015, 10:54:10 pm

Any help would be very appreciated!