P0140 Cadillac 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…
Category: Cadillac
P0141 Cadillac O2 Sensor 1/2 Heater Performance
P0141 Cadillac O2 Sensor 1/2 Heater Performance Possible causes – Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2– Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit fuse– Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit open shorted to ground– Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit poor electrical connection– Faulty…
P0142 Cadillac O2 Sensor Circuit Malfunction Bank 1 Sensor 3
P0142 Cadillac O2 Sensor Circuit Malfunction Bank 1 Sensor 3 Possible causes – Faulty Heated Oxygen Sensor Bank 1 Sensor 3– Heated Oxygen Sensor Bank 1 Sensor 3 harness is open or shorted– Heated Oxygen Sensor Bank 1 Sensor 3 circuit poor electrical connection Tech description Replacing the O2 Sensor 3 usually takes care of…
P0133 Cadillac HO2S11 Sensor Circuit Slow Response
P0133 Cadillac 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 Cadillac O2 Sensor Circuit No Activity Detected Bank 1 Sensor 1
P0134 Cadillac 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 Cadillac O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1
P0135 Cadillac 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…
P0136 Cadillac HO2S12 Sensor Range/Performance Condition
P0136 Cadillac 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…
P0137 Cadillac HO2S Circuit Low Voltage Bank 1 Sensor 2
P0137 Cadillac 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…
P0132 Cadillac HO2S11 Sensor Circuit High Voltage
P0132 Cadillac 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…
P012C Cadillac Turbocharger / Supercharger Inlet Pressure Sensor Circuit Low
P012C Cadillac Turbocharger / Supercharger Inlet Pressure Sensor Circuit Low OBD Code: System: Subsystem: P012C Cadillac – (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: Cadillac Vehicle:Cadillac CTS Coupe, Cadillac CTS-V…
P012D Cadillac Turbocharger / Supercharger Inlet Pressure Sensor Circuit High
P012D Cadillac Turbocharger / Supercharger Inlet Pressure Sensor Circuit High OBD Code: System: Subsystem: P012D Cadillac – (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: Cadillac Vehicle:Cadillac CTS Coupe, Cadillac CTS-V…
P012E Cadillac Turbocharger / Supercharger Inlet Pressure Sensor Circuit Intermittent / Erratic
P012E Cadillac Turbocharger / Supercharger Inlet Pressure Sensor Circuit Intermittent / Erratic OBD Code: System: Subsystem: P012E Cadillac – (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: Cadillac Vehicle:Cadillac CTS Coupe, Cadillac CTS-V Coupe…
P0130 Cadillac HO2S11 Sensor Range/Performance Condition
P0130 Cadillac 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 Cadillac HO2S11 Sensor Circuit Low Voltage
P0131 Cadillac 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…
P0127 Cadillac Intake Air Temperature Too High
P0127 Cadillac 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 Cadillac Engine Coolant Temperature Below Thermostat Regulating Temperature
P0128 Cadillac 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…
P0129 Cadillac Barometric Pressure Out Of Range Low
P0129 Cadillac Barometric Pressure Out Of Range Low Possible causes – Faulty Manifold Absolute Pressure (MAP) sensor– Manifold Absolute Pressure (MAP) sensor harness open or shorted– Manifold Absolute Pressure (MAP) sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P0129 Cadillac Description The Engine Control Module (ECM) has…
P012A Cadillac Turbocharger / Supercharger Inlet Pressure Sensor Circuit
P012A Cadillac Turbocharger / Supercharger Inlet Pressure Sensor Circuit OBD Code: System: Subsystem: P012A Cadillac – (ASE) Powertrain Fuel and Air Metering Trouble Code Description: Turbocharger / Supercharger Inlet Pressure Sensor Circuit Location: Analysis: Possible Causes: Circuit Issue Tech description: Cadillac Vehicle:Cadillac CTS Coupe, Cadillac CTS-V Coupe , Cadillac Eldorado , Cadillac Escalade EXT…
P012B Cadillac Turbocharger / Supercharger Inlet Pressure Sensor Circuit Range / Performance
P012B Cadillac Turbocharger / Supercharger Inlet Pressure Sensor Circuit Range / Performance OBD Code: System: Subsystem: P012B Cadillac – (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: Cadillac Vehicle:Cadillac CTS Coupe, Cadillac CTS-V…
P0122 Cadillac Throttle Position Sensor/Accelerator Position Pedal Circuit Low Input
P0122 Cadillac Throttle Position Sensor/Accelerator Position Pedal Circuit Low Input Possible causes – Faulty throttle position sensor– Throttle position sensor harness is open or shorted– Throttle position sensor circuit poor electrical connection– Faulty Powertrain Control Module (PCM) What about the obd code? The P0122 Cadillac code will set if Throttle Position Sensor (TPS) voltage drops…