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Home › Chevrolet › 2006 › Impala LTZ › Repair and Diagnosis › Engine Performance › System › Engine Control System - 3.9L - DTC P0010 To DTC P0420 › DTC P0133, P1133, or P2A00 › DTC Descriptor

DTC Descriptor

DTC P0133: HO2S Slow Response Bank 1 Sensor 1
DTC P1133: HO2S Insufficient Switching Bank 1 Sensor 1
DTC P2A00: HO2S Circuit Closed Loop (CL) Performance Bank 1 Sensor 1