P0540 OBD Code Definition:
P0540 Intake Air Heater Feedback Circuit
P0540 OBD Code Description:
OBD Code P0540
Intake Air Heater “A” Circuit
What’s mean?
OBD2 Code P0540 Definition:
Symptoms
Possible sumptoms of P0540
– Engine Light ON (or Service Engine Soon Warning Light)
Possible Causes
Possible causes of P0540
Possible Solutions