P0139 TOYOTA HO2S12 Circuit Slow Response

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 the Rear Heated Oxygen Sensor Bank…

P0138 TOYOTA Oxygen Sensor Circuit High 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– Intake air leaks– Exhaust gas leaks– Inappropriate fuel pressure– Faulty fuel injectors Tech description Replacing the Rear Heated Oxygen Sensor Bank 1 usually takes…

P0161 TOYOTA HO2S22 Heater Circuit Malfunction

Possible causes – Faulty Rear Heated Oxygen Sensor Bank 2– Rear Heated Oxygen Sensor Bank 2 harness is open or shorted– Rear Heated Oxygen Sensor Bank 2 circuit poor electrical connection– Inappropriate fuel pressure – Faulty fuel injectors– Intake air leaks– Exhaust gas leaks Tech description Replacing the Rear Heated Oxygen Sensor Bank 2 usually…

P0552 TOYOTA Power Steering Pressure Sensor Circuit Low Input

Possible causes – Faulty Power Steering Pressure Sensor– Power Steering Pressure Sensor harness is open or shorted– Power Steering Pressure Sensor circuit poor electrical connection When is the obd code mean? A low voltage from the Power Steering Pressure Sensor is sent to Engine Control Module (ECM). Symptoms – Engine Light ON (or Service Engine…

P0103 TOYOTA Mass or Volume Air Flow Circuit High Input

Possible causes – Faulty mass air flow sensor– Intake air leaks– Dirty mass air flow sensor– Dirty mass air filter– Mass air flow sensor harness is open or shorted– Mass air flow sensor circuit poor electrical connection Tech description Before replacing the mass air flow sensor, try replacing the air filter and cleaning the air…

P0102 TOYOTA Mass or Volume Air Flow Circuit Low Input

Possible causes – Faulty mass air flow sensor– Intake air leaks– Dirty mass air flow sensor– Dirty mass air filter– Mass air flow sensor harness is open or shorted– Mass air flow sensor circuit poor electrical connection Tech description Before replacing the mass air flow sensor, try replacing the air filter and cleaning the air…

P2195 2005 TOYOTA COROLLA Oxygen Air/Fuel Sensor Signal Stuck Lean Bank 1 Sensor 1

Possible causes – Faulty Oxygen Air/Fuel Sensor Bank 1 Sensor 1– Oxygen Air/Fuel Sensor Bank 1 Sensor 1 harness is open or shorted– Oxygen Air/Fuel Sensor Bank 1 Sensor 1 circuit poor electrical connection– Faulty EFI Relay– Faulty Injector– Faulty Engine Control Module (ECM) Tech description There is a factory service bulletin for the following…

P2195 2006 TOYOTA COROLLA Oxygen Air/Fuel Sensor Signal Stuck Lean Bank 1 Sensor 1

Possible causes – Faulty Oxygen Air/Fuel Sensor Bank 1 Sensor 1– Oxygen Air/Fuel Sensor Bank 1 Sensor 1 harness is open or shorted– Oxygen Air/Fuel Sensor Bank 1 Sensor 1 circuit poor electrical connection– Faulty EFI Relay– Faulty Injector– Faulty Engine Control Module (ECM) Tech description There is a factory service bulletin for the following…

P2195 TOYOTA Oxygen Air/Fuel Sensor Signal Stuck Lean Bank 1 Sensor 1

Possible causes – Faulty Oxygen Air/Fuel Sensor Bank 1 Sensor 1– Oxygen Air/Fuel Sensor Bank 1 Sensor 1 harness is open or shorted– Oxygen Air/Fuel Sensor Bank 1 Sensor 1 circuit poor electrical connection– Faulty EFI Relay– Faulty Injector– Faulty Engine Control Module (ECM) Tech description There is a factory service bulletin for the following…

P2195 2007 TOYOTA CAMRY SEDAN Oxygen Air/Fuel Sensor Signal Stuck Lean Bank 1 Sensor 1

Possible causes – Faulty Oxygen Air/Fuel Sensor Bank 1 Sensor 1– Oxygen Air/Fuel Sensor Bank 1 Sensor 1 harness is open or shorted– Oxygen Air/Fuel Sensor Bank 1 Sensor 1 circuit poor electrical connection– Faulty EFI Relay– Faulty Injector– Faulty Engine Control Module (ECM) Tech description There is a factory service bulletin for the following…