Powertrain
generic / SAE
P2A77
Alternative Fuel Hydraulic Pump Pressure Sensor Circuit Low
Voltage on the alternative fuel hydraulic pump pressure sensor signal line is below the expected window. Wire shorted to ground or sensor short.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / numberA / 77
Possible causes
- Signal wire shorted to ground high
- Internal sensor short medium
- Connector pins corroded - high contact resistance low
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 200–1000 €
- Estimated time: 1–4 h
- Component: alt fuel hyd pump pressure sensor
- Component: wiring harness
- Component: afcm
- MIL / check engine light
- emissions-relevant
- limp mode possible
Sources
References
sae:J2012