Category: OBDii Powertrain Codes

P1173 Throttle Actuation Potentiometer Signal 2 Signal Too High Possible causes – Faulty Throttle Position Sensor (TPS)– Faulty Throttle Position Sensor (TPS) harness is open or shorted– Faulty Throttle Position Sensor (TPS) circuit poor electrical connection– Faulty Throttle Drive electric motor– Faulty Throttle Valve Control Module Symptoms – Engine Light ON (or Service Engine Soon…

P1174 Fuel Trim Cylinder Balance Bank 1 Possible causes – Faulty Oxygen sensor– Ignition problem– Fuel injection problem– Engine mechanical condition Tech description Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1174 Description The Engine Control Module (ECM) performs a fuel trim cylinder balance utilizing the HO2S, when the calculated accumulated voltage…

P1166 Air/Fuel Ratio Sensor 1 Heater Circuit Malfunction Possible causes – Faulty Air/Fuel Ratio Sensor 1– Air/Fuel Ratio Sensor 1 harness is open or shorted– Air/Fuel Ratio Sensor 1 circuit poor electrical connection What about the obd code? If the element is not activated or the Engine Control Module (ECM) terminal voltage is a set…

P1167 Heated Rear Oxygen Sensor 2 Maximum Voltage Monitoring Bank 2 Possible causes – Faulty Heated Rear Oxygen Sensor Bank 2– Heated Rear Oxygen Sensor Bank 2 harness is open or shorted– Heated Rear Oxygen Sensor Bank 2 circuit poor electrical connection– Fuel pressure– Injectors– Intake air leaks Tech description Replacing the Rear Oxygen (O2)…

P1168 Closed Loop Control Function Bank 2 Possible causes – Faulty Air Fuel Ratio Sensor 1 Bank 2 – Air Fuel Ratio Sensor 1 Bank 2 harness is open or shorted– Air Fuel Ratio Sensor 1 Bank 2 circuit poor electrical connection Tech description What about the obd code? The closed loop control function for…

P1169 Air/Fuel Ratio Sensor 1 LABEL High Voltage Possible causes – Faulty Air/Fuel Ratio Sensor 1– Air/Fuel Ratio Sensor 1 harness is open or shorted– Air/Fuel Ratio Sensor 1 circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1169 Description The Air/Fuel Ratio (A/F) sensor 1 is installed in…

P1170 Bank To Bank Fuel Trim Offset Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P1171 Fuel System Lean During Acceleration Possible causes – Plugged fuel filter or low fuel pressure– Faulty or dirty Mass Air Flow sensor Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P1172 Rear A/F Sensor Bank 1 Sensor 1 Circuit Out Of Range High Possible causes – Faulty Air/Fuel Ratio Bank 1 Sensor 1– Air/Fuel Ratio Bank 1 Sensor 1 harness is open or shorted– Air/Fuel Ratio Bank 1 Sensor 1 circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)…

P1160 Intake Air Temperature Sensor Short To Ground Possible causes – Fualty battery– Faulty Generator/Alternator Control– Alternator harness is open or shorted– Alternator circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1160 Description The Engine Control Module (ECM) has detected a voltage range outside operating limits

P1161 Intake Air Temperature Sensor Open/Short To Positive Possible causes – Faulty Intake Air Temperature Sensor– Intake Air Temperature Sensor harness is shorted– Intake Air Temperature Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P1162 Air/Fuel Ratio Sensor 1 Circuit Malfunction Possible causes – Faulty Air/Fuel Ratio Sensor 1– Air/Fuel Ratio Sensor 1 harness is open or shorted– Air/Fuel Ratio Sensor 1 circuit poor electrical connection What about the obd code? If the element is not activated or the Engine Control Module (ECM) terminal voltage is a set value…

P1163 Heated Oxygen Sensor 1 Lean Shift Monitoring Bank 2 Possible causes – Fualty Front Heated Oxygen Sensor Bank 2– Faulty Front Heated oxygen sensor 1 heater– Fuel pressure– Faulty Fuel Injectors– Intake air leaks Tech description If there are no intake air leaks, the most Possible Causes of the P1163 code is the front…

P1164 Air/Fuel Ratio Sensor 1 Range/Performance Problem Possible causes – Faulty Air/Fuel Ratio Sensor 1– Air/Fuel Ratio Sensor 1 harness is open or shorted– Air/Fuel Ratio Sensor 1 circuit poor electrical connection What about the obd code? If the element is not activated or the Engine Control Module (ECM) terminal voltage is a set value…

P1165 Air/Fuel Ratio Sensor 1 Circuit Range/Performance Possible causes – Air/Fuel Ratio Sensor 1 harness is open or shorted– Air/Fuel Ratio Sensor 1 circuit poor electrical connection– Faulty Air/Fuel Ratio Sensor 1 What about the obd code? If the element is not activated or the Engine Control Module (ECM) terminal voltage is a set value…

P1159 Air/Fuel Ratio Sensor 1 AFS+ Terminal Low Voltage Possible causes – Faulty Air/Fuel Ratio Sensor 1– Air/Fuel Ratio Sensor 1 harness is open or shorted– Air/Fuel Ratio Sensor 1 circuit poor electrical connection What about the obd code? If the element is not activated or the Engine Control Module (ECM) terminal voltage is a…

P1153 HO2S Insufficient Switching Bank 2 Sensor 1 Possible causes – Faulty Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1– Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1 harness is open or shorted– Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1 circuit poor electrical connection What about the obd code? A DTC P1153 sets when…

P1154 HO2S Transition Time Ratio Bank 2 Sensor 1 Possible causes – Faulty Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1– Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1 harness is open or shorted– Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1 circuit poor electrical connection What about the obd code? The P1154 code sets…

P1155 Air/Fuel Ratio Sensor Heater Circuit Malfunction Bank 2 Sensor 1 Possible causes – Faulty Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1– Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1 harness is open or shorted– Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1 circuit poor electrical connection – Faulty Engine Control Module (ECM) What…

P1156 Manifold Absolute Pressure Sensor Open/Short To Ground Possible causes – Faulty Manifold Absolute Pressure Sensor– Manifold Absolute Pressure Sensor harness is open or shorted– Manifold Absolute Pressure Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)