P0507

Documented for: 2.0L gasoline; 2.5L/3.0L gasoline · System(s): EMS EOBD, EMS OBD II · Factory MIL flag: 2

Common causes

• Idle speed control valve drive circuit(s): short circuit to high voltage Idle speed control valve stuck open Idle speed control valve failure
• Intake air leak between MAF sensor and throttle Intake air leak between throttle and engine Engine crankcase breather leak Throttle valve stuck open Throttle body failure
• Idle Air Control System RPM Higher Than Expected

Quick checks

• Confirm freeze-frame and conditions when the code set
• Inspect connectors, grounds, and harness for the circuit named in the code
• Compare live sensor values vs expected (unplugged/biased sensors are common)
• Check intake boots, PCV, and vacuum lines for splits (very common on aged X-Types)

Typical fixes

• Check for vacuum leaks behind throttle body