Possible causes – Faulty Air Conditioning Clutch Relay– Air Conditioning Clutch Relay harness is open or shorted– Air Conditioning Clutch Relay circuit poor electrical connection When is the code detected? The P0645 code is stored if an open or short
Possible causes – Faulty Air Conditioning Clutch Relay– Air Conditioning Clutch Relay harness is open or shorted– Air Conditioning Clutch Relay circuit poor electrical connection When is the code detected? The P0645 code is stored if an open or short
Possible causes – Faulty Air Conditioning Clutch Relay– Air Conditioning Clutch Relay harness is open or shorted– Air Conditioning Clutch Relay circuit poor electrical connection When is the code detected? The P0645 code is stored if an open or short
Possible causes – Faulty Air Conditioning Clutch Relay– Air Conditioning Clutch Relay harness is open or shorted– Air Conditioning Clutch Relay circuit poor electrical connection When is the code detected? The P0645 code is stored if an open or short
Possible causes – Faulty Air fuel ratio (A/F) sensor 1 bank 1– Air fuel ratio (A/F) sensor 1 bank 1 harness is open or shorted– Air fuel ratio (A/F) sensor 1 bank 1 circuit poor electrical connection– Inappropriate fuel pressure–
Possible causes – Faulty Air fuel ratio (A/F) sensor 1 bank 1– Air fuel ratio (A/F) sensor 1 bank 1 harness is open or shorted– Air fuel ratio (A/F) sensor 1 bank 1 circuit poor electrical connection– Inappropriate fuel pressure–
Possible causes – Faulty Air fuel ratio (A/F) sensor 1 bank 1– Air fuel ratio (A/F) sensor 1 bank 1 harness is open or shorted– Air fuel ratio (A/F) sensor 1 bank 1 circuit poor electrical connection– Inappropriate fuel pressure–
Possible causes – Faulty Air fuel ratio (A/F) sensor 1 bank 1– Air fuel ratio (A/F) sensor 1 bank 1 harness is open or shorted– Air fuel ratio (A/F) sensor 1 bank 1 circuit poor electrical connection– Inappropriate fuel pressure–
Possible causes – Faulty Air fuel ratio (A/F) sensor 1 bank 1– Air fuel ratio (A/F) sensor 1 bank 1 harness is open or shorted– Air fuel ratio (A/F) sensor 1 bank 1 circuit poor electrical connection– Inappropriate fuel pressure–
Possible causes – Faulty Air fuel ratio (A/F) sensor 1 bank 1– Air fuel ratio (A/F) sensor 1 bank 1 harness is open or shorted– Air fuel ratio (A/F) sensor 1 bank 1 circuit poor electrical connection– Inappropriate fuel pressure–
Possible causes – Faulty Air fuel ratio (A/F) sensor 1 bank 2– Air fuel ratio (A/F) sensor 1 bank 2 harness is open or shorted– Air fuel ratio (A/F) sensor 1 bank 2 circuit poor electrical connection– Inappropriate fuel pressure–
Possible causes – Faulty Air fuel ratio (A/F) sensor 1 bank 2– Air fuel ratio (A/F) sensor 1 bank 2 harness is open or shorted– Air fuel ratio (A/F) sensor 1 bank 2 circuit poor electrical connection– Inappropriate fuel pressure–
Possible causes – Faulty Air fuel ratio (A/F) sensor bank 1 sensor 1– Air fuel ratio (A/F) sensor bank 1 sensor 1 harness is open or shorted– Air fuel ratio (A/F) sensor bank 1 sensor 1 circuit poor electrical connection–
Possible causes – Faulty Air fuel ratio (A/F) sensor bank 1 sensor 1– Air fuel ratio (A/F) sensor bank 1 sensor 1 harness is open or shorted– Air fuel ratio (A/F) sensor bank 1 sensor 1 circuit poor electrical connection–
Possible causes – Faulty Air fuel ratio (A/F) sensor bank 2 sensor 1– Air fuel ratio (A/F) sensor bank 2 sensor 1 harness is open or shorted– Air fuel ratio (A/F) sensor bank 2 sensor 1 circuit poor electrical connection–
Possible causes – Faulty Air fuel ratio (A/F) sensor bank 2 sensor 1– Air fuel ratio (A/F) sensor bank 2 sensor 1 harness is open or shorted– Air fuel ratio (A/F) sensor bank 2 sensor 1 circuit poor electrical connection–
Possible causes – Faulty Air Pump inoperative– Air bypass solenoid harness is open or shorted– Air bypass solenoid circuit poor electrical connection Tech notes There is a factory service bulletin for the following Toyota models: 2005-2007 Toyota Sequoia2005
Possible causes – Faulty Air Pump inoperative– Air bypass solenoid harness is open or shorted– Air bypass solenoid circuit poor electrical connection When is the code detected? If the fault detection circuit senses a voltage other than what is expected,
Possible causes – Faulty Air Pump inoperative– Air bypass solenoid harness is open or shorted– Air bypass solenoid circuit poor electrical connection When is the code detected? If the fault detection circuit senses a voltage other than what is expected,
Possible causes – Faulty Air Pump inoperative– Air bypass solenoid harness is open or shorted– Air bypass solenoid circuit poor electrical connection When is the code detected? If the fault detection circuit senses a voltage other than what is expected,