Possible causes – Faulty Coolant Flow Control Valve Position Sensor– Coolant Flow Control Valve Position Sensor harness is open or shorted– Coolant Flow Control Valve Position Sensor circuit poor electrical connection Tech notes For Non-Hybrid Toyota Vehicles P1121 = Accelerator

Possible causes – Faulty Coolant Flow Control Valve Position Sensor– Coolant Flow Control Valve Position Sensor harness is open or shorted– Coolant Flow Control Valve Position Sensor circuit poor electrical connection Tech notes For Non-Hybrid Toyota Vehicles P1120 = Accelerator

Possible causes – Faulty Coolant Flow Control Valve Position Sensor– Coolant Flow Control Valve Position Sensor harness is open or shorted– Coolant Flow Control Valve Position Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon

Possible causes – Faulty Coolant Flow Control Valve Position Sensor– Coolant Flow Control Valve Position Sensor harness is open or shorted– Coolant Flow Control Valve Position Sensor circuit poor electrical connection Tech notes There is a Toyota factory service bulletin

Possible causes – Faulty electric throttle control actuator (TP sensor 1 and 2)– Throttle Position Sensor harness is open or shorted– Throttle Position Sensor circuit poor connection– Faulty accelerator pedal position sensor Symptoms – Engine Light ON (or Service Engine

Possible causes – Faulty electric throttle control actuator– Throttle plate sticking due to carbon build-up– Electric throttle control actuator harness is open or shorted– Electric throttle control actuator poor electrical circuit connection– Engine Control Module When is the code detected?

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 When is the code detected? The P1129 code is

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

Possible causes – Faulty Engine Control Module (ECM) Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1100 TOYOTA Description Barometric (BARO) Pressure Sensor

Possible causes – Faulty Engine Coolant Temperature (ECT) sensor for HST– Low engine coolant level– Engine Coolant Temperature (ECT) sensor for HST harness is open or shorted– Engine Coolant Temperature (ECT) sensor for HST electrical circuit poor connection– Faulty engine

Possible causes – Faulty Engine Coolant Temperature (ECT) sensor for HST– Low engine coolant level– Engine Coolant Temperature (ECT) sensor for HST harness is open or shorted– Engine Coolant Temperature (ECT) sensor for HST electrical circuit poor connection– Faulty engine

Possible causes – Faulty Engine Coolant Temperature (ECT) sensor for HST– Low engine coolant level– Engine Coolant Temperature (ECT) sensor for HST harness is open or shorted– Engine Coolant Temperature (ECT) sensor for HST electrical circuit poor connection– Faulty engine

Possible causes – Faulty Engine Coolant Temperature (ECT) sensor for HST– Low engine coolant level– Engine Coolant Temperature (ECT) sensor for HST harness is open or shorted– Engine Coolant Temperature (ECT) sensor for HST electrical circuit poor connection– Faulty engine

Possible causes – Faulty Input Speed Sensor– Input Speed Sensor harness is open or shorted– Input Speed Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

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 TOYOTA Description Magnetic clutch is mounted between the throttle

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

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

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

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

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