Error code
OBD2 P0508
OBD2P0508
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Idle Air Control System Circuit Low.
Severity
moderateCan drive but may experience rough idling and stalling issues.
Summary
P0508 indicates an issue with the Idle Air Control (IAC) system circuit being too low, which is related to the IAC valve or its wiring.
Common Causes
- Wiring short to earth
- Faulty IAC valve
Fixes
- Replace faulty IAC valve or repair wiring issue.
FAQ
What does P0508 mean?
P0508 indicates a problem with the Idle Air Control (IAC) system circuit being too low, often due to issues with the IAC valve or its wiring.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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- P0505Idle Air Control System
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- P0507Idle Air Control System RPM Higher Than Expected
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