Powertrain
generic / SAE
P2528
Vacuum Reservoir Pressure Sensor Circuit High
Sensor signal voltage above the upper limit — usually a short to reference voltage or open signal return. ECM disables vacuum pump control to avoid overshooting.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number5 / 28
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: 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