MK5 Golf GTI

All Things Mk5 => Mk5 General Area => Topic started by: mayesj86 on May 25, 2017, 07:58:40 pm

Title: Engine warning light
Post by: mayesj86 on May 25, 2017, 07:58:40 pm: Looking for some advice again.
Changed the plugs and coils (ngk's and r8 coils) and now the exhaust reduced emissions light has come on and stayed on. Car is running perfectly smooth with no missfires. Would this likely to be a lambda sensor fault or MAF? I have double checked the connections I touched and all are fine.
Cheers
Jason
Title: Re: Engine warning light
Post by: Shamm on May 25, 2017, 10:20:33 pm: Have you got a standard exhaust? If so then at times the light will come on the dash but will go out later it self
Title: Re: Engine warning light
Post by: MIJ_JAGGER on May 25, 2017, 10:29:23 pm: Quote from: Shamm on May 25, 2017, 10:20:33 pm
Have you got a standard exhaust? If so then at times the light will come on the dash but will go out later it self
Why would the light just come on at times?
Title: Re: Engine warning light
Post by: mayesj86 on May 25, 2017, 11:20:08 pm: Quote from: Shamm on May 25, 2017, 10:20:33 pm
Have you got a standard exhaust? If so then at times the light will come on the dash but will go out later it self

It has a standard downpipe and miltek cat back. Is it normal for the light to flick on and off? This is the first time it's happened in 12k miles.
Gave everything a double check and all is ok. Can't see it be the coils or plugs.
Thanks for the quick response.
Title: Re: Engine warning light
Post by: colesey on May 26, 2017, 07:24:05 am: Have you perhaps also filled the fuel tank right to the brim? I had the CEL come on once when doing that and it soon went back to normal once the overfill vapours had gone away.
Title: Re: Engine warning light
Post by: slix on May 26, 2017, 07:59:20 am: If a problem comes after fitting new parts then it's usually down to the parts or something you did whilst installing the parts.