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.
Affected components
- Vacuum reservoir pressure sensor
- Sensor wiring
Common causes
- High likelihood: Signal wire shorted to reference voltage
- Medium likelihood: Open signal return
- Low likelihood: Connector pins corroded - high contact resistance
Diagnostic notes
- The malfunction indicator lamp may illuminate
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.