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 shorted to ground– Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit poor electrical connection– Air-Fuel Ratio
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 shorted to ground– Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit poor electrical connection– Air-Fuel Ratio
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 shorted to ground– Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit poor electrical connection– Air-Fuel Ratio
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 shorted to ground– Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit poor electrical connection– Air-Fuel Ratio
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 shorted to ground– Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit poor electrical connection– Air-Fuel Ratio
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 shorted to ground– Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit poor electrical connection– Air-Fuel Ratio
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 shorted to ground– Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit poor electrical connection– Air-Fuel Ratio
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 shorted to ground– Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1 circuit poor electrical connection– Air-Fuel Ratio
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 shorted to ground– Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1 circuit poor electrical connection– Air-Fuel Ratio
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 shorted to ground– Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1 circuit poor electrical connection– Air-Fuel Ratio
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 shorted to ground– Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1 circuit poor electrical connection– Air-Fuel Ratio
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 shorted to ground– Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1 circuit poor electrical connection– Air-Fuel Ratio
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 shorted to ground– Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1 circuit poor electrical connection– Faulty Engine
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 shorted to ground– Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1 circuit poor electrical connection– Faulty Engine
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 shorted to ground– Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1 circuit poor electrical connection– Faulty Engine
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 shorted to ground– Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1 circuit poor electrical connection– Faulty Engine
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 shorted to ground– Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1 circuit poor electrical connection– Faulty Engine
Possible causes – Faulty alternator– Alternator harness is open or shorter– Alternator poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)
Possible causes – Faulty ambient air temperature sensor– Ambient air temperature sensor harness is open or shorted– Ambient air temperature sensor circuit poor electrical connection When is the code detected? Ambient temperature sensor input voltage is above the minimum acceptable
Possible causes – Faulty ambient air temperature sensor– Ambient air temperature sensor harness is open or shorted– Ambient air temperature sensor circuit poor electrical connection When is the code detected? Ambient temperature sensor input voltage is above the minimum acceptable