Technical Definition:
Intake Air Heater A Circuit Open
Trouble Code: P0543
Address: 0x0543
System: Powertrain
Subsystem: Vehicle Speed Control, Idle Controls, and Auxiliary Inputs
Address: 0x0543
System: Powertrain
Subsystem: Vehicle Speed Control, Idle Controls, and Auxiliary Inputs
Technical Description:
Possible Causes:
Possible Symptoms:
Intake Air Heater Incorrect Voltage
Possible Solutions:
OBD-II Trouble Code Type:
Diagnostic Step:
Tech Notes:
– Faulty Intake Air Heater relay
– Faulty Intake Air Heater
– Intake Air Heater harness is open or shorted
– Intake Air Heater circuit poor electrical connection