C0309
Outlet Valve Rear Right Performance
The rear right outlet solenoid valve does not respond hydraulically as expected.
The rear right outlet solenoid valve does not respond hydraulically as expected.
Common causes
- high
Valve stuck
One of the most commonly reported causes for this code — check this first.
Typical part cost: $440-1760
- medium
Coil resistance drift
A plausible cause — test and verify before replacing parts.
Typical part cost: $440-1760
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does C0309 mean?
C0309 means "Outlet Valve Rear Right Performance". It is a generic OBD-II code that points to a fault in the chassis.
What are the most common causes of C0309?
valve stuck; coil resistance drift — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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