Code result

C0309

Outlet Valve Rear Right Performance

Moderate severity

What it means

The rear right outlet solenoid valve does not respond hydraulically as expected.

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

  • Valve stuck

    high

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

  • Coil resistance drift

    medium

    A plausible cause — test and verify before replacing parts.

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