what does trouble code PO1506 mean?


Asked by Mar 15, 2017 at 11:20 AM about the 1998 Ford Escort 4 Dr SE Wagon

Question type: Maintenance & Repair

my check engine keeps coming on had it scanned and the trouble code
PO1506 but no one can tell me what is the problem that causes the computer
to send that code  HELP

1 Answer


P1506 FORD - Idle Air Control Overspeed Error...Possible causes; Faulty Idle Air Control (IAC) valve, IAC valve harness is open or shorted, IAC valve circuit poor electrical connection, Intake leaks, Stuck PCV Valve...The P1506 code means that the engine idle is out of factory specification. Sometimes the Idle Air Control (IAC) may have carbon built up. Disconnect the car battery, remove the valve, clean, re-install valve, and drive the vehicle for about 5 minutes with the headlights and A/C ON to get the idle relearned. Also, check for intake leaks or stuck PCV Valve. If the problem persists, the IAC valve may need to be replaced.

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