DTC P0506 Or P0507: Condition

DTC P0506 is set when Engine Control Module (ECM) detects engine idle speed is 100 RPM or more lower than predetermined for 20 seconds or more, continuously.

DTC P0507 is set when Engine Control Module (ECM) detects engine idle speed is 200 RPM or more higher than predetermined for 20 seconds or more, continuously. MIL is illuminated when detects malfunction during 2 consecutive drive cycles. Possible causes are:

• IAC valve malfunction.
• IAC valve circuit malfunction.
• Air intake system plugged, leaking or fast idle control system malfunction.