P040F Code – Exhaust Gas Recirculation Temperature Sensor A B Correlation

Code P040F Possible Causes
Exhaust Gas Recirculation Temperature Sensor A or B circuit poor electrical connection
Exhaust Gas Recirculation Temperature Sensor A or B harness is open or shorted
Faulty Exhaust Gas Recirculation Temperature Sensor A or B
Air bypass solenoid circuit poor electrical connection
Air bypass solenoid harness is open or shorted
Air bypass solenoid leaking/blocked or stuck open/closed

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