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Troubleshooting Diagnostic Trouble Code (DTC) Chart (cont'd) DTC (MIL indication) P0139 (63)* 2 P0141 (65) P0153 (61)* 2 P0154 (1) P0155 (41) P0171 (46)* 2 P0172 (46)* 2 P0174 (45)* 2 P0175 (45)* 2 P0300 P0325 (53) P0330 (23) Detection Item Secondary Heated Oxygen Sensor (Sensor 2) Secondary Heated Oxygen Left Primary Heated Oxygen Sensor (Left Primary HO2S) Slow Left Primary Heated Oxygen Sensor (Left Primary HO2S) Left Primary Heated Oxygen Fuel System Too Lean [Right Fuel System Too Rich [Right Bank Fuel System Too Lean [Left Bank Fuel System Too Rich [Left Bank Random Misfire Right Knock Sensor (Bank 1) Left Knock Sensor (Bank 2) Circuit Malfunction Probable Cause • Secondary H02S (Sensor 2) • Open or short in Secondary H02S (Sensor 2) heater circuit • PCM • Left Primary H02S (Bank 2, Sensor 1) • Open in Left Primary H02S (Bank 2, Sensor 1) circuit • Left Primary H02S (Bank 2, Sensor 1) • PCM • Open or short in Left Primary HO2S (Bank 2, Sensor 1) heater circuit • PCM • Fuel supply system • Fuel supply system • Fuel supply system • Fuel supply system (Bank 1) circuit • Right Knock Sensor (Bank 1) • PCM • Open or short in Left Knock Sensor (Bank 2) circuit • Left Knock Sensor (Bank 2) • PCM Page *2: These DTCs require two "trips" or two driving cycles unless the SCS service connector is connected. Main Menu Table of Contents |