What does code P1508 mean on Honda vehicles?
The ECU detects a malfunction in the idle air control (IAC) valve circuit affecting idle regulation.
OBD-II Code Honda
P1508 — Honda — IAC Valve Circuit Failure
The ECU detects a malfunction in the idle air control (IAC) valve circuit affecting idle regulation.
Common symptoms
- Unstable idle
- engine stalling
Possible causes
- Faulty IAC valve
- internal electrical failure
Initial recommendation
Clean the IAC valve and replace it if the fault persists.
Safety notice
This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine Honda code P1508 with your vehicle's actual symptoms for more complete diagnostic guidance.
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