Powertrain
generic / SAE
P2542
Low Pressure Fuel System Sensor Circuit High
The low-pressure fuel system sensor signal voltage is above the upper limit. Either a short to reference voltage in the signal line, an open signal return, or a sensor reading pegged high after an internal failure. The HP-pump pressure-control strategy falls back to default.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number5 / 42
Possible causes
- Signal wire shorted to reference voltage high
- Open signal return medium
- Connector pins corroded - high contact resistance low
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 120–500 €
- Estimated time: 0.5–2 h
- Component: lp fuel pressure sensor
- Component: sensor wiring
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012