Code result
P2A6F
Alternative Fuel Rail Pressure Regulator Inlet Pressure Too High
High severity
What it means
The measured inlet pressure of the alternative fuel rail pressure regulator exceeds the calibrated maximum. Pump regulator stuck high or downstream restriction.
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
Pump pressure regulator stuck high
highOne of the most commonly reported causes for this code — check this first.
Restriction downstream of regulator
mediumA plausible cause — test and verify before replacing parts.
Related help
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