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TuningBot DTC Database · v4.37.15

P0508 Idle Air Control System Circuit Low

Generic (OBD-II) interpretation in the TuningBot DTC database.

P · PowertrainEngineOBD2

What P0508 means

P0508
Idle Air Control System Circuit Low Generic · engine Data confidence 90%

The control module detected that the signal in the Idle Air Control System circuit stayed below the expected operating range.

Possible causes

  • Wiring short to earth
  • IAC valve
  • ECM

Related and nearby codes

How to read P0508

P

Powertrain: engine, transmission and driveline systems.

0

Generic SAE-standard code: same meaning on every make.

508

Specific fault index within the subsystem.

Frequently asked questions about P0508

What does P0508 mean?

Idle Air Control System Circuit Low. The control module detected that the signal in the Idle Air Control System circuit stayed below the expected operating range.

Is P0508 generic or manufacturer-specific?

P0508 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P0508 at file level?

If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.

Other file services

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