All Things Mk5 > How to Guides / Troubleshooting

Fault code P0172

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

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  :thinking:

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

Any advice?

GTI_Kyle:
anyone?

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