P2A27
Alternative Fuel Tank Shutoff Valve C Control Circuit Performance/Stuck Off
The control circuit of alternative fuel tank shutoff valve C reports a control circuit performance/stuck off condition. Tank isolation cannot be commanded as expected on multi-tank CNG/LPG systems.
The control circuit of alternative fuel tank shutoff valve C reports a control circuit performance/stuck off condition. Tank isolation cannot be commanded as expected on multi-tank CNG/LPG systems.
Common causes
- high
Shutoff valve mechanically stuck closed
One of the most commonly reported causes for this code — check this first.
Typical part cost: $170-880
- medium
Coil force degraded with age
A plausible cause — test and verify before replacing parts.
Typical part cost: $170-880
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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
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Frequently asked questions
What does P2A27 mean?
P2A27 means "Alternative Fuel Tank Shutoff Valve C Control Circuit Performance/Stuck Off". It is a generic OBD-II code that points to a fault in the auxiliary emission controls.
What are the most common causes of P2A27?
shutoff valve mechanically stuck closed; coil force degraded with age; carbon or debris buildup preventing free movement — 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?
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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