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Code result

P24F9

Exhaust Aftertreatment Fuel Air Purge Valve Control Circuit Range/Performance

Moderate severity

What it means

The valve coil is electrically intact, but the response (current rise time, return-current decay, position feedback) does not match the ECM model. Typical for solenoids losing magnetic strength after long thermal cycling, or armatures with increased friction from coking.

Is it safe to drive?

Use caution

The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.

Most likely causes

  • Aged solenoid with weakened magnetic force

    high

    One of the most commonly reported causes for this code — check this first.

  • Coked armature with increased friction

    medium

    A plausible cause — test and verify before replacing parts.

  • Sensor element aged beyond calibration window

    low

    Less common, but worth ruling out after the more likely causes.

Related help

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