P2A6C
Alternative Fuel Rail Pressure Regulator Pressure Sensor Circuit High
Voltage on the inlet pressure sensor signal line of the alternative fuel rail pressure regulator is above the expected window. Wire shorted to B+ or sensor open.
Voltage on the inlet pressure sensor signal line of the alternative fuel rail pressure regulator is above the expected window. Wire shorted to B+ or sensor open.
Common causes
- high
Signal wire shorted to B+
One of the most commonly reported causes for this code — check this first.
Typical part cost: $220-1650
- medium
Open pressure sensor
A plausible cause — test and verify before replacing parts.
Typical part cost: $220-1650
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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 P2A6C mean?
P2A6C means "Alternative Fuel Rail Pressure Regulator Pressure Sensor Circuit High". It is a generic OBD-II code that points to a fault in the auxiliary emission controls.
What are the most common causes of P2A6C?
signal wire shorted to b+; open pressure sensor; connector pins corroded - high contact resistance — 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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