Code result
P2A6A
Alternative Fuel Rail Pressure Regulator Pressure Sensor Range/Performance
High severity
What it means
The inlet pressure signal of the alternative fuel rail pressure regulator does not match plausibility checks against tank pressure and pump duty. Sensor drift.
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
Sensor zero drifted
highOne of the most commonly reported causes for this code — check this first.
Sensor mounting loose - bias offset
mediumA plausible cause — test and verify before replacing parts.
Sensor element aged beyond calibration window
lowLess common, but worth ruling out after the more likely causes.
Related help
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