Posts Tagged: P0508

P0508 IAC valve sense circuit low.

Fix code P0508 IAC valve sense circuit low If you encounter a problem with P0508 IAC valve sense circuit low on a Chrysler vehicle, here’s how to proceed. The Idle Air Control is a linear solenoid valve that opens based on computer commands to bypass air around the closed throttle plate that occurs at idle. The IAC has a tapered pintle with a corresponding seat in the throttle body. The PCM constantly check return voltage from the IAC to determine if its working and it compares actual RPM with commanded … Read More