Fault code P0172

[kyleb123]

P0172 bank 1 system too rich. Had this fault come up lately, after clearing it comes on after a day or 2

My in tank fuel pump has been humming/ticking on idle for a while now so I presume its got something to do with it?

Also had a new 3" catback fitted lately, will this also throw the code up? Rosstech says its because the air/fuel ratio is out of balance

My thoughts are that a new LPFP & a map tweak should cure this?

Any advice?

 

[kyleb123]

anyone?

 

[boggle]

Talk to he place you had the map done. Proberly down to the more free flowing exhaust

 

[Dr-LCR]

It's been now 3 years that I've had this code coming up, but not very often though. Mine appears every now and then, without any noticeable abnormality in the behaviour of the car. I am sure it appears when moving slowly and never when putting pressure on the engine. I started a thread in the Leon Mk2 section and one int the Revo Performance section afew days ago.