Category: OBDii Powertrain Codes

P1139 HO2S Insufficient Switching Bank 1 Sensor 2 Possible causes – Faulty HO2S Bank 1 Sensor 2– HO2S Bank 1 Sensor 2 harness is open or shorted– HO2S Bank 1 Sensor 2 circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P1126 Throttle Control Motor Relay Circuit Open Possible causes – Faulty Magnetic Clutch– Magnetic Clutch harness is open or shorted– Magnetic Clutch circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1126 Description Magnetic clutch is mounted between the throttle motor and the valve, and it connects the throttle…

P1127 ECTS Actuator Power Source Circuit Malfunction Possible causes – Faulty Electronic Throttle Control System (ETCS) Actuator– Electronic Throttle Control System (ETCS) Actuator harness is open or shorted– Electronic Throttle Control System (ETCS) Actuator circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1127 Description Battery positive voltage is…

P1128 Throttle Control Motor Circuit Short Possible causes – Faulty Throttle Control Motor– Throttle Control Motor harness is open or shorted– Throttle Control Motor circuit poor electrical connection What about the obd code? Engine Control Module (ECM) detects short both circuits between ECM and throttle control motor. Symptoms – Engine Light ON (or Service Engine…

P1129 Manifold Absolute Pressure Sensor Circuit Higher Than Expected 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)– Engine hard to start– Rough or erratic idle speed P1129…

P1130 Swirl Control Valve Control Solenoid Valve Possible causes – Faulty Swirl control valve control solenoid valve– Swirl control valve control solenoid valve circuit is open or shorted– Swirl control valve circuit is open or shorted– Faulty swirl control valve– Faulty Swirl control valve actuator What about the obd code? The P1130 code is detected…

P1131 HO2S Circuit Low Variance Bank 1 Sensor 2 Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1131 Description A Heated Exhaust Oxygen (HO2S) sensor indicating lean at the end of a test is trying to correct for an over-rich condition. The test fails when the fuel control system no longer detects…

P1132 HO2S Heater Circuit Bank 1/2 Sensor 1 Short To B+ Possible causes – Faulty O2 Sensor– O2 Sensor harness is open or shorted– O2 Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1132 Description A Heated Exhaust Oxygen (HO2S) sensor indicating rich at the end of…

P1125 Throttle Control Motor Circuit Malfunction Possible causes – Faulty Throttle Control Motor– Throttle Control Motor harness is open or shorted– Throttle Control Motor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1125 Description Throttle motor is operated by the ECM and it opens and closes the throttle…

P1119 Engine Coolant Temperature Signal Out Of Rage Possible causes – Faulty Engine Coolant Temperature Sensor– Engine Coolant Temperature Sensor harness is open or shorted– Engine Coolant Temperature Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1119 Description The Engine Coolant Temperature (ECT) sensor contains a semiconductor…

P1120 Throttle Position Sensor 1 Circuit Possible causes – Faulty Throttle Position Sensor– Throttle Position Sensor harness is open or shorted– Throttle Position Sensor circuit poor electrical connection– Throttle Position Sensor not properly adjusted What about the obd code? When the Powertrain Control Module (PCM) senses a signal voltage higher than the normal operating range…

P1121 Electric Throttle Control Actuator Possible causes – Faulty Electric Throttle Control Actuator– Electric Throttle Control Actuator harness is open or shorted– Electric Throttle Control Actuator circuit poor electrical connection What about the obd code? Electric throttle control actuator does not function properly due to the return spring malfunction or throttle valve is stuck open…

P1122 Electric Throttle Control Performance Problem Possible causes – Faulty Electric Throttle Control Actuator– Electric Throttle Control Actuator harness is open or shorted– Electric Throttle Control Actuator circuit poor electrical connection Tech description What about the obd code? Electric throttle control function does not operate properly. Symptoms – Engine Light ON (or Service Engine Soon…

P1123 Long Term Fuel Trim Adjustment Bank 1 System Too Rich Possible causes – Faulty HO2S– Faulty Mass Air Flow Sensor– High fuel pressure– Canister purge solenoid stuck open– HO2S harness is open or shorted– HO2S circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P1124 Throttle Control Motor Relay Circuit Short Possible causes – Fualty Throttle Control Motor relay– Throttle Control Motor relay harness is open or shorted– Throttle Control Motor relay circuit poor electrical connection What about the obd code? Engine Control Module (ECM) detect the throttle control motor relay is stuck ON. Symptoms – Engine Light ON…

P1113 Intake Resonance Switchover Valve Circuit Possible causes – Faulty HO2 Sensor Bank 1 Sensor 1– HO2 Sensor Bank 1 Sensor 1 harness is open or shorted– HO2 Sensor Bank 1 Sensor 1 circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P1114 Engine Coolant Temperature Sensor Circuit Intermittent Low Voltage Possible causes – Faulty Engine Coolant Temperature (ECT) sensor– Low engine coolant level– Engine Coolant Temperature (ECT) sensor harness is open or shorted– Engine Coolant Temperature (ECT) sensor electrical circuit poor connection– Faulty engine coolant thermostat Symptoms – Engine Light ON (or Service Engine Soon Warning…

P1115 Engine Coolant Temperature Sensor Circuit Intermittent High Voltage Possible causes – Faulty Engine Coolant Temperature (ECT) sensor– Low engine coolant level– Engine Coolant Temperature (ECT) sensor harness is open or shorted– Engine Coolant Temperature (ECT) sensor electrical circuit poor connection– Faulty engine coolant thermostat Symptoms – Engine Light ON (or Service Engine Soon Warning…

P1116 Engine Coolant Temperature Sensor Performance Problem Possible causes – Faulty Engine Coolant Temperature (ECT) sensor– Low engine coolant level– Engine Coolant Temperature (ECT) sensor harness is open or shorted– Engine Coolant Temperature (ECT) sensor electrical circuit poor connection– Faulty engine coolant thermostat Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1116…

P1117 Engine Coolant Temp Signal Out-Of-Range Low Possible causes – Faulty Engine Coolant Temperature (ECT) sensor– Low engine coolant level– Engine Coolant Temperature (ECT) sensor harness is open or shorted– Engine Coolant Temperature (ECT) sensor electrical circuit poor connection– Faulty engine coolant thermostat Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1117…