Vacuum Reservoir Pressure Sensor Circuit Intermittent
The sensor signal jumps or drops out intermittently — loose connector, vibration, or chafed harness. The ECM filters short transients but flags the input when noise exceeds limits.
Affected components
- Vacuum reservoir pressure sensor
- Sensor wiring
Common causes
- High likelihood: Loose connector
- Medium likelihood: Chafed harness
- Low likelihood: Connector with intermittent contact under vibration
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.