P1143 Volvo Heated Oxygen Sensor 1 Lean Shift Monitoring Bank 1 Possible causes – Faulty Front Heated Oxygen Sensor Bank 1– Intake air leaks– Front Heated Oxygen Sensor Bank 1 harness is open or shorted– Front Heated Oxygen Sensor Bank 1 circuit poor electrical connection– Fuel pressure– Injectors Tech description If there are no intake…
P1142 Volvo HO2S12 Heater Circuit High
P1142 Volvo HO2S12 Heater Circuit High Possible causes – Faulty HO2S12– HO2S12 harness is open or shorted– HO2S12 circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) Volvo Vehicle:Volvo C70,Volvo S40,Volvo XC90,Volvo XC70,Volvo XC60,Volvo V70,Volvo V50,Volvo V40,Volvo S90,Volvo S80,Volvo S60
P1141 Volvo HO2S Heater Control Circuit Bank 1 Sensor 2
P1141 Volvo HO2S Heater Control Circuit 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) Volvo Vehicle:Volvo C70,Volvo S40,Volvo XC90,Volvo XC70,Volvo…
P1140 Volvo HO2S22 Internal Resistance Too High
P1140 Volvo HO2S22 Internal Resistance Too High Possible causes – Faulty HO2S22 Sensor– HO2S22 Sensor harness is open or shorted– HO2S22 Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) Volvo Vehicle:Volvo C70,Volvo S40,Volvo XC90,Volvo XC70,Volvo XC60,Volvo V70,Volvo V50,Volvo V40,Volvo S90,Volvo S80,Volvo S60
P1139 Volvo HO2S Insufficient Switching Bank 1 Sensor 2
P1139 Volvo 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) Volvo Vehicle:Volvo C70,Volvo S40,Volvo XC90,Volvo XC70,Volvo XC60,Volvo…
P1138 Volvo HO2S Circuit High Voltage During Decel Fuel Cut-Off Sensor 2
P1138 Volvo HO2S Circuit High Voltage During Decel Fuel Cut-Off Sensor 2 Possible causes – Vacuum leak on engine– Faulty Failed Mass Air Flow (MAF)– Faulty HO2S– HO2S harness is open or shorted– HO2S circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) Volvo Vehicle:Volvo C70,Volvo S40,Volvo XC90,Volvo XC70,Volvo…
P1137 Volvo HO2S Circuit Low Voltage During Power Enrichment Sensor 2
P1137 Volvo HO2S Circuit Low Voltage During Power Enrichment Sensor 2 Possible causes – Air leak near HO2S– Faulty HO2S– HO2S harness is open or shorted– HO2S circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) Volvo Vehicle:Volvo C70,Volvo S40,Volvo XC90,Volvo XC70,Volvo XC60,Volvo V70,Volvo V50,Volvo V40,Volvo S90,Volvo S80,Volvo S60
P1135 Volvo HO2S Heater Circuit- Bank 1 & 2 Sensor 2 Electrical Malfunction
P1135 Volvo HO2S Heater Circuit- Bank 1 & 2 Sensor 2 Electrical Malfunction 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) P1135 Volvo Description A Heated Exhaust Oxygen (HO2S) sensor indicating rich at…
P1134 Volvo HO2S Heater Circuit- Bank 1 & 2 Sensor 2 Short To B+
P1134 Volvo HO2S Heater Circuit- Bank 1 & 2 Sensor 2 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) P1134 Volvo Description A Heated Exhaust Oxygen (HO2S) sensor indicating rich…
P1133 Volvo HO2S Heater Circuit- Bank 1 & 2 Sensor 1 Electrical Malfunction
P1133 Volvo HO2S Heater Circuit- Bank 1 & 2 Sensor 1 Electrical Malfunction 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) P1133 Volvo Description A Heated Exhaust Oxygen (HO2S) sensor indicating rich at…
P1132 Volvo HO2S Heater Circuit Bank 1/2 Sensor 1 Short To B+
P1132 Volvo 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 Volvo Description A Heated Exhaust Oxygen (HO2S) sensor indicating rich at the…
P1131 Volvo HO2S Circuit Low Variance Bank 1 Sensor 2
P1131 Volvo HO2S Circuit Low Variance Bank 1 Sensor 2 Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1131 Volvo 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…
P1130 Volvo Swirl Control Valve Control Solenoid Valve
P1130 Volvo 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 Volvo code…
P1129 Volvo Manifold Absolute Pressure Sensor Circuit Higher Than Expected
P1129 Volvo 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…
P1128 Volvo Throttle Control Motor Circuit Short
P1128 Volvo 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…
P1127 Volvo ECTS Actuator Power Source Circuit Malfunction
P1127 Volvo 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 Volvo Description Battery positive…
P1126 Volvo Throttle Control Motor Relay Circuit Open
P1126 Volvo 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 Volvo Description Magnetic clutch is mounted between the throttle motor and the valve, and it connects…
P1125 Volvo Throttle Control Motor Circuit Malfunction
P1125 Volvo 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 Volvo Description Throttle motor is operated by the ECM and it opens and closes…
P1124 Volvo Throttle Control Motor Relay Circuit Short
P1124 Volvo 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…
P1123 Volvo Long Term Fuel Trim Adjustment Bank 1 System Too Rich
P1123 Volvo 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) Volvo Vehicle:Volvo C70,Volvo…