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Code P080, Fuel System Rich: Actions

PCM turns on MIL. A rich fuel injection system can be caused by leaky injector, faulty fuel pressure regulator or restricted fuel line. A continuous evaporative emission control canister purge can be caused by a leaking EVAP purge valve, purge valve solenoid, circuit or PCM.

Fig 1: Code P080 Schematic, Fuel System Rich
G94A33233Courtesy of GENERAL MOTORS CORP.