Technical Definition:
Idle Air Control Circuit
Trouble Code: P0511
Address: 0x0511
System: Powertrain
Subsystem: Vehicle Speed Control, Idle Controls, and Auxiliary Inputs
Address: 0x0511
System: Powertrain
Subsystem: Vehicle Speed Control, Idle Controls, and Auxiliary Inputs
Technical Description:
Possible Causes:
Possible Symptoms:
Idle Air Control Circuit Malfunction
Possible Solutions:
OBD-II Trouble Code Type:
Diagnostic Step:
Tech Notes:
– Idle Air Control Valve (IACV)/Auxiliary Air Control (AAC) Valve harness is open or shorted
– Idle Air Control Valve (IACV)/Auxiliary Air Control (AAC) Valve circuit poor electrical connection
– Faulty Idle Air Control Valve (IACV)/Auxiliary Air Control (AAC) Valve
Specific Makes:
– Engine hard to start
– Rough or erratic idle speed