[RS3_AL]

Hi guys,

 

p0172 fuel system too rich

 

Was mapped by MRC a couple of weeks ago and they fitted a bigger hpfp a few days after this was done it came on, I done some checks for intake leaks etc which all seemed to be ok, injectors/spark plugs are all new and cleared the code

 

Came back on tonight

 

Any one had this issue before?

Edited by RS3_AL, 01 December 2020 - 10:13 AM.

[RS3Dell]

Hi guys,

Was mapped by MRC a couple of weeks ago a few days after this was done it came on, I done some checks for intake leaks etc which all seemed to be ok, injectors/spark plugs are all new and cleared the code

Came back on tonight on the way back from Tesco

Suspecting (since the fault never appeared before the map) that the map/uprated fuel pump internals are to blame

Any one had this issue before?

That code is an issue with bank 1 O2 sensor ( 1st after the turbo before the cat) Could just be a coincidence or the 02 was on its last legs before the remap & now don't like it.

Speak to Doug & see what he says ?

Dell.

Edited by RS3Dell, 22 November 2020 - 08:25 PM.

[RS3_AL]

Aye was done through mrc scotland mate, will need to give them a call just in case anyone seen it before dont want to go giving them grief if its something else

[RS3Dell]

Aye was done through mrc scotland mate, will need to give them a call just in case anyone seen it before dont want to go giving them grief if its something else

Exactly 👍

Dell.

[RS3Dell]

Aye was done through mrc scotland mate, will need to give them a call just in case anyone seen it before dont want to go giving them grief if its something else

Tbh it should have been your 1st port of call before posting it.

Dell.

[Pil5burydoughboy]

Aye was done through mrc scotland mate, will need to give them a call just in case anyone seen it before dont want to go giving them grief if its something else

Speak to Dave at Mrc scotland he'll sort it for you.

[RS3_AL]

The problem was the fuel filter of all things... checked on vcds and the lp fuel system was intermittently over pressure - bought a genuine 6.6bar filter and the pressure dropped by about 6 bar. (had a cheapo wix filter on it)