OBD-II code · Powertrain (generic, extended)
P2A7C Alternative Fuel Hydraulic Pressure Sensor Circuit Low
Voltage on the alternative fuel hydraulic system pressure sensor signal line is below the expected window. Wire shorted to ground or sensor short.
Is it safe to drive with P2A7C?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySignal wire shorted to ground
- PossibleInternal sensor short
- Less likelyConnector pins corroded - high contact resistance
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–4 h
- Emissions test
- Likely to fail
- Parts involved
- Alt Fuel Hyd Pressure Sensor, Wiring Harness, Afcm
Related codes
- P2A79Alternative Fuel Hydraulic Pump Pressure Sensor Circuit Intermittent/Erratic
- P2A7AAlternative Fuel Hydraulic Pressure Sensor Circuit
- P2A7BAlternative Fuel Hydraulic Pressure Sensor Range/Performance
- P2A7DAlternative Fuel Hydraulic Pressure Sensor Circuit High
- P2A7EAlternative Fuel Hydraulic Pressure Sensor Circuit Intermittent/Erratic
- P2A7FAlternative Fuel Pump A Compression Stroke Valve Control Circuit/Open
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.