Indice dei codici guasto · medium
P0506
Idle RPM lower than expected
Idle RPM lower than expected
Documented for: 2.0L gasoline; 2.5L/3.0L gasoline · System(s): EMS EOBD, EMS OBD II · Factory MIL flag: 2
Common causes
- Air intake restriction Accessory drive overload (defective / seized component) Idle speed control valve drive circuit(s): open circuit, short circuit, high resistance Idle speed control valve stuck closed Idle speed control valve failure
- Air intake restriction Accessory drive overload (defective / seized component) Throttle valve stuck closed Throttle body failure
- Idle Air Control System RPM Lower 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
- Clean IAC/Throttle body