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Alfa Romeo DTC

Alfa Romeo DTC P0172

Manufacture

Alfa Romeo DTC

Code

P0172

Definition

System Too Rich (Bank 1)

Description

When the sum of the short term and long term fuel corrections is less than a calibrated threshold, generally 67% (100% is nominal), the fail timer will increment. After 30 seconds of fail time the diagnostic fails.

Cause

  • O2 Return Wiring IssueO2 SensorMap SensorLeaking Evap Purge SolenoidExcessive Fuel Pressure Or Poor Fuel Quality ContaminationFuel Pump ModuleFuel Injector Leaking Into EngineEngine MechanicalPowertrain Control Module (Pcm)

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