The ECM monitors engine speed deviation from the target idle engine speed when the vehicle is stopped and the throttle valve opening is stable. The ECM sets DTC P0506 if the desired engine speed is greater than the actual engine speed.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Idle speed monitoring | 1. Poor connector connection 2. Restricted intake or exhaust System 3. Vacuum leaks 4. Faulty throttle body |
Enable Condition |
•
Vehicle speed is 0 km/h (0 mph)
•
Coolant temperature is higher than 60℃(140℉)
•
Intake air temperature is higher than -10.5℃(13.1℉)
•
Acceleration pedal position is 0% | |
Threshold Value |
•
Desired engine speed is greater than actual engine speed by 100 RPM | |
Diagnosis Time |
•
8 sec | |
MIL ON Condition |
•
2 driving cycles |
