P2A6E
Alternative Fuel Rail Pressure Regulator Inlet Pressure Too Low
The measured inlet pressure of the alternative fuel rail pressure regulator falls below the calibrated minimum. Tank near empty, pump output insufficient, or upstream restriction.
The measured inlet pressure of the alternative fuel rail pressure regulator falls below the calibrated minimum. Tank near empty, pump output insufficient, or upstream restriction.
Common causes
- high
Alt fuel tank near empty
One of the most commonly reported causes for this code — check this first.
Typical part cost: $220-1650
- medium
Alt fuel pump output low
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 P2A6E mean?
P2A6E means "Alternative Fuel Rail Pressure Regulator Inlet Pressure Too Low". It is a generic OBD-II code that points to a fault in the auxiliary emission controls.
What are the most common causes of P2A6E?
alt fuel tank near empty; alt fuel pump output low — 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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