P0508
Idle Air Control System Circuit Low
Powertrain Code · Medium
What does P0508 mean?
The idle air control valve circuit is reading low.
System: Idle Control
P0508 is a powertrain diagnostic trouble code indicating idle air control system circuit low. This code is classified as medium severity, which means: schedule service — affects performance or emissions.
Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your vehicle.
