P0136 Chevrolet HO2S12 Sensor Range/Performance Condition Possible causes – Faulty Rear Heated Oxygen Sensor Bank 1– Rear Heated Oxygen Sensor Bank 1 harness is open or shorted– Rear Heated Oxygen Sensor Bank 1 circuit poor electrical connection– Inappropriate fuel pressure– Faulty fuel injectors– Intake air leaks may be faulty– Exhaust gas leaks Tech description Replacing…
Category: Chevrolet
P0137 Chevrolet HO2S Circuit Low Voltage Bank 1 Sensor 2
P0137 Chevrolet HO2S Circuit Low Voltage Bank 1 Sensor 2 Possible causes – Faulty Rear Heated Oxygen Sensor Bank 1– Rear Heated Oxygen Sensor Bank 1 harness is open or shorted– Rear Heated Oxygen Sensor Bank 1 circuit poor electrical connection– Inappropriate fuel pressure– Faulty fuel injectors– Intake air leaks may be faulty– Exhaust gas…
P0138 Chevrolet HO2S12 Circuit High Voltage
P0138 Chevrolet HO2S12 Circuit High Voltage Possible causes – Faulty Rear Heated Oxygen Sensor Bank 1– Rear Heated Oxygen Sensor Bank 1 harness is open or shorted– Rear Heated Oxygen Sensor Bank 1 circuit poor electrical connection– Intake air leaks– Exhaust gas leaks– Inappropriate fuel pressure– Faulty fuel injectors Tech description Replacing the Rear Heated…
P0139 Chevrolet HO2S Circuit Slow Response Bank 1 Sensor 2
P0139 Chevrolet HO2S Circuit Slow Response Bank 1 Sensor 2 Possible causes – Faulty Rear Heated Oxygen Sensor Bank 1– Rear Heated Oxygen Sensor Bank 1 harness is open or shorted– Rear Heated Oxygen Sensor Bank 1 circuit poor electrical connection– Inappropriate fuel pressure– Faulty fuel injectors– Intake air leaks may be faulty– Exhaust gas…
P0140 Chevrolet HO2S12 Sensor Circuit No Activity Detected
P0140 Chevrolet HO2S12 Sensor Circuit No Activity Detected Possible causes – Faulty Rear Heated Oxygen Sensor Bank 1– Rear Heated Oxygen Sensor Bank 1 harness is open or shorted– Rear Heated Oxygen Sensor Bank 1 circuit poor electrical connection– Inappropriate fuel pressure– Faulty fuel injectors– Intake air leaks may be faulty– Exhaust gas leaks Tech…
P0130 Chevrolet HO2S11 Sensor Range/Performance Condition
P0130 Chevrolet HO2S11 Sensor Range/Performance Condition Possible causes – Faulty Front Heated Oxygen Sensor Bank 1– Front Heated Oxygen Sensor Bank 1 harness is open or shorted– Front Heated Oxygen Sensor Bank 1 circuit poor electrical connection– Inappropriate fuel pressure– Faulty fuel injectors– Intake air leaks may be faulty– Exhaust gas leaks Tech description Replacing…
P0131 Chevrolet HO2S11 Sensor Circuit Low Voltage
P0131 Chevrolet HO2S11 Sensor Circuit Low Voltage Possible causes – Faulty Front Heated Oxygen Sensor Bank 1– Front Heated Oxygen Sensor Bank 1 harness is open or shorted– Front Heated Oxygen Sensor Bank 1 circuit poor electrical connection– Inappropriate fuel pressure– Faulty fuel injectors– Intake air leaks may be faulty– Exhaust gas leaks Tech description…
P0132 Chevrolet HO2S11 Sensor Circuit High Voltage
P0132 Chevrolet HO2S11 Sensor Circuit High Voltage Possible causes – Faulty Front Heated Oxygen Sensor Bank 1– Front Heated Oxygen Sensor Bank 1 harness is open or shorted– Front Heated Oxygen Sensor Bank 1 circuit poor electrical connection– Inappropriate fuel pressure– Faulty fuel injectors– Intake air leaks may be faulty– Exhaust gas leaks Tech description…
P0133 Chevrolet HO2S11 Sensor Circuit Slow Response
P0133 Chevrolet HO2S11 Sensor Circuit Slow Response Possible causes – Faulty Front Heated Oxygen Sensor Bank 1– Front Heated Oxygen Sensor Bank 1 harness is open or shorted– Front Heated Oxygen Sensor Bank 1 circuit poor electrical connection– Inappropriate fuel pressure– Faulty fuel injectors– Intake air leaks may be faulty– Exhaust gas leaks Tech description…
P0134 Chevrolet O2 Sensor Circuit No Activity Detected Bank 1 Sensor 1
P0134 Chevrolet O2 Sensor Circuit No Activity Detected Bank 1 Sensor 1 Possible causes – Faulty Front Heated Oxygen Sensor Bank 1– Front Heated Oxygen Sensor Bank 1 harness is open or shorted– Front Heated Oxygen Sensor Bank 1 circuit poor electrical connection– Inappropriate fuel pressure– Faulty fuel injectors– Intake air leaks may be faulty–…
P0135 Chevrolet O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1
P0135 Chevrolet O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1 Possible causes – Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1– Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit fuse– Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit open shorted to ground– Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit…
P012A Chevrolet Turbocharger / Supercharger Inlet Pressure Sensor Circuit
P012A Chevrolet Turbocharger / Supercharger Inlet Pressure Sensor Circuit OBD Code: System: Subsystem: P012A Chevrolet – (ASE) Powertrain Fuel and Air Metering Trouble Code Description: Turbocharger / Supercharger Inlet Pressure Sensor Circuit Location: Analysis: Possible Causes: Circuit Issue Tech description:
P012B Chevrolet Turbocharger / Supercharger Inlet Pressure Sensor Circuit Range / Performance
P012B Chevrolet Turbocharger / Supercharger Inlet Pressure Sensor Circuit Range / Performance OBD Code: System: Subsystem: P012B Chevrolet – (ASE) Powertrain Fuel and Air Metering Trouble Code Description: Turbocharger / Supercharger Inlet Pressure Sensor Circuit Range / Performance Location: Analysis: Possible Causes: Out of Expected Range Tech description:
P012C Chevrolet Turbocharger / Supercharger Inlet Pressure Sensor Circuit Low
P012C Chevrolet Turbocharger / Supercharger Inlet Pressure Sensor Circuit Low OBD Code: System: Subsystem: P012C Chevrolet – (ASE) Powertrain Fuel and Air Metering Trouble Code Description: Turbocharger / Supercharger Inlet Pressure Sensor Circuit Low Location: Analysis: Possible Causes: End of Range – Circuit Lower Than Expected Tech description:
P012D Chevrolet Turbocharger / Supercharger Inlet Pressure Sensor Circuit High
P012D Chevrolet Turbocharger / Supercharger Inlet Pressure Sensor Circuit High OBD Code: System: Subsystem: P012D Chevrolet – (ASE) Powertrain Fuel and Air Metering Trouble Code Description: Turbocharger / Supercharger Inlet Pressure Sensor Circuit High Location: Analysis: Possible Causes: End of Range – Circuit Higher Than Expected Tech description:
P012E Chevrolet Turbocharger / Supercharger Inlet Pressure Sensor Circuit Intermittent / Erratic
P012E Chevrolet Turbocharger / Supercharger Inlet Pressure Sensor Circuit Intermittent / Erratic OBD Code: System: Subsystem: P012E Chevrolet – (ASE) Powertrain Fuel and Air Metering Trouble Code Description: Turbocharger / Supercharger Inlet Pressure Sensor Circuit Intermittent / Erratic Location: Analysis: Possible Causes: Periodically Unstable Circuit Tech description:
P0125 Chevrolet Engine Coolant Temperature Sensor
P0125 Chevrolet Engine Coolant Temperature Sensor Possible causes – Low engine coolant level– Leaking or stuck open thermostat– Faulty Engine Coolant Temperature (ECT) sensor– Engine Coolant Temperature (ECT) sensor harness is open or shorted– Engine Coolant Temperature (ECT) sensor electrical circuit poor connection What about the obd code? The voltage sent to Engine Control Module…
P0126 Chevrolet Insufficient Coolant Temperature for Stable Operation
P0126 Chevrolet Insufficient Coolant Temperature for Stable Operation Possible causes – Low engine coolant level– Leaking or stuck open thermostat– Faulty Engine Coolant Temperature (ECT) sensor– Engine Coolant Temperature (ECT) sensor harness is open or shorted– Engine Coolant Temperature (ECT) sensor electrical circuit poor connection What about the obd code? The voltage sent to Engine…
P0127 Chevrolet Intake Air Temperature Too High
P0127 Chevrolet Intake Air Temperature Too High Possible causes – Faulty Intake Air Temperature (IAT) sensor– Intake Air Temperature (IAT) sensor harness is open or shorted– Intake Air Temperature (IAT) sensor electrical circuit poor connection Tech description If the Intake Air Temperature (IAT) is part of the Mass Air Flow (MAF) the MAF assembly will…
P0128 Chevrolet Engine Coolant Temperature Below Thermostat Regulating Temperature
P0128 Chevrolet Engine Coolant Temperature Below Thermostat Regulating Temperature Possible causes – Leaking or stuck open thermostat– Low engine coolant level– Insufficient warm up time– Faulty engine coolant temperature sensor– Engine coolant temperature sensor harness is open or shorted– Engine coolant temperature sensor circuit poor electrical connection Tech description If cooling system is not leaking…