Code result
P2A44
Alternative Fuel Tank B Pressure Sensor Circuit High
High severity
What it means
Voltage on the pressure sensor signal line of alternative fuel tank B is above the expected window. Wire shorted to B+ or sensor open.
Is it safe to drive?
No — stop driving
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.
Most likely causes
Signal wire shorted to B+
highOne of the most commonly reported causes for this code — check this first.
Open pressure sensor
mediumA plausible cause — test and verify before replacing parts.
Connector pins corroded - high contact resistance
lowLess common, but worth ruling out after the more likely causes.
Related help
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