P2A3E
Alternative Fuel Delivery Error
The AFCM detects that alternative fuel delivery to the engine deviates from the commanded amount. Pump output, valve actuation, or injector flow does not match expectations.
The AFCM detects that alternative fuel delivery to the engine deviates from the commanded amount. Pump output, valve actuation, or injector flow does not match expectations.
Common causes
- high
Alt fuel pump output degraded
One of the most commonly reported causes for this code — check this first.
Typical part cost: $330-2200
- medium
Alt fuel injectors partially clogged
A plausible cause — test and verify before replacing parts.
Typical part cost: $330-2200
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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 P2A3E mean?
P2A3E means "Alternative Fuel Delivery Error". It is a generic OBD-II code that points to a fault in the auxiliary emission controls.
What are the most common causes of P2A3E?
alt fuel pump output degraded; alt fuel injectors partially clogged — 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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