P2A44

Q: 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.

Alternative Fuel Tank B Pressure Sensor Circuit High

High severity

Voltage on the pressure sensor signal line of alternative fuel tank B is above the expected window. Wire shorted to B+ or sensor open.

Common causes

Signal wire shorted to B+
One of the most commonly reported causes for this code — check this first.
high
Typical part cost: $170-880
Open pressure sensor
A plausible cause — test and verify before replacing parts.
medium
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 P2A44 mean?

P2A44 means "Alternative Fuel Tank B 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 P2A44?

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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