Technical Definition:

Idle Air Control Overspeed Error (see P0507)

Technical Description:

Possible Causes:

• A vacuum leak
• Leaking air intake after the throttle body
• EGR valve leaking vacuum
• A faulty positive crankcase ventilation (PCV) valve
• Damaged/failed/dirty throttle body
• Failed EVAP system
• Failed IAC (idle air controller) or faulty IAC circuit

Possible Symptoms:

Idle Air Control System At Adaptive Clip

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes: