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TuningBot DTC Database · v4.37.15

P24FA Exhaust Aftertreatment Fuel Air Purge Valve Control Circuit Low

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

P · PowertrainEmissionsOBD2

What P24FA means

P24FA
Exhaust Aftertreatment Fuel Air Purge Valve Control Circuit Low Generic · emissions Data confidence 65%

The control module detected that the signal in the Exhaust Aftertreatment Fuel Air Purge Valve Control circuit stayed below the expected operating range.

Symptoms

  • MIL illuminated
  • Possible fuel smell in case of larger leaks

Possible causes

  • Loose or faulty fuel filler cap
  • Cracked EVAP hose or line
  • Purge or vent valve fault
  • Fuel tank pressure sensor fault
  • Leak detection pump fault

Recommended checks

  • Check fuel filler cap seating first
  • Read fuel tank pressure sensor values
  • Actuate purge and vent valves and verify response
  • Smoke-test the EVAP system for leaks

Related and nearby codes

How to read P24FA

P

Powertrain: engine, transmission and driveline systems.

2

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

4FA

Specific fault index within the subsystem.

Frequently asked questions about P24FA

What does P24FA mean?

Exhaust Aftertreatment Fuel Air Purge Valve Control Circuit Low. The control module detected that the signal in the Exhaust Aftertreatment Fuel Air Purge Valve Control circuit stayed below the expected operating range.

Is P24FA generic or manufacturer-specific?

P24FA is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P24FA 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

ECU tuningDyno-tested results by model and engine See the results →

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