Code result
P2A6B
Alternative Fuel Rail Pressure Regulator Pressure Sensor Circuit Low
High severity
What it means
Voltage on the inlet pressure sensor signal line of the alternative fuel rail pressure regulator is below the expected window. Wire shorted to ground or sensor short.
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 ground
highOne of the most commonly reported causes for this code — check this first.
Internal sensor short
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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