Why is the p0505 IAC code not reset?
Why is the p0505 IAC code not reset?
If the P0505 code doesn’t reset, replace the IAC. It is internally shorting one of the IAC circuits. If the code DOES return after unplugging the IAC and starting the engine, then you know it isn’t the IAC motor. Visually check the wiring harness all the way back to the PCM.
What causes a p0505 code on a PCM?
Potential causes of an P0505 code include: IAC motor connector is damaged (check connector and pins for damage, and moisture) One or more IAC circuits open or shorted to ground. One or more IAC circuits are shorted to voltage. IAC has failed. PCM has failed.
Can a bad idle control valve cause stalling?
This is controlled by the engine’s computer. Sometimes parts go bad, which results in your car idling strangely or stalling. Check to see if your idle control valve is functioning properly before attempting to replace it. Look for a high engine idle. A common symptom of a faulty idle control valve can be a high idle.
What are the symptoms of an idle air control valve ( IAC )?
Another symptom of a potential issue with the idle air control valve (IAC) is; an illuminated Check Engine Light. If the engine control module detects an issue with the idle air control valve circuit or signal; it will set off the Check Engine Light to notify the driver that there’s an issue.
What causes an IAC fault code of p0505?
Potential causes of an P0505 code include: IAC motor connector is damaged (check connector and pins for damage, and moisture) One or more IAC circuits open or shorted to ground This should be a fairly straightforward diagnosis. Start by clearing the fault codes. Then unplug the IAC and start the engine (This may cause other IAC codes to set.
Why is my p0505 code not reset?
If the P0505 code doesn’t reset, replace the IAC. It is internally shorting one of the IAC circuits. If the code DOES return after unplugging the IAC and starting the engine, then you know it isn’t the IAC motor.
Another symptom of a potential issue with the idle air control valve (IAC) is; an illuminated Check Engine Light. If the engine control module detects an issue with the idle air control valve circuit or signal; it will set off the Check Engine Light to notify the driver that there’s an issue.
Can a car run with the IAC disconnected?
An engine can run with the IAC disconnected if everything else is right.Sometimes if a base idle speed adjustment is needed the IAC is unplugged, the base idle set with the throttle plate screw, and the IAC then reconnected.
