p0172 system too rich

Asked by Ross Jan 08, 2015 at 09:11 PM about the 2000 Mitsubishi Eclipse GS

Question type: Maintenance & Repair

cant figure what is causing this code too come on changed the mass air flow sensor and
that didnt help code p0172

1 Answer
30,520

mikeatpriestlake answered 9 years ago

dirty maf is only one of the things that can cause this. there could be a bad heated o2 sensor, you could have exhaust leaks, injector problems, or screwed up fuel pressure.

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