Powertrain
generic / SAE
P2527
Vacuum Reservoir Pressure Sensor Circuit Low
Sensor signal voltage below the lower limit — usually a short to ground or open reference. The ECM disables vacuum pump control until the input recovers.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number5 / 27
Possible causes
- Signal wire shorted to ground high
- Missing 5 V reference at the sensor medium
- Connector pins corroded - high contact resistance low
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 80–400 €
- Estimated time: 0.4–1.5 h
- Component: vacuum reservoir pressure sensor
- Component: sensor wiring
- MIL / check engine light
Sources
References
sae:J2012