Engine Coolant Bypass Valve B Position Sensor Circuit Low
Voltage on the engine coolant bypass valve B position sensor signal line is below the expected window. Wire shorted to ground or sensor short.
Affected components
- Engine coolant bypass valve b position sensor
- Wiring harness
- Ecm
Common causes
- High likelihood: Signal wire shorted to ground
- Medium likelihood: Internal sensor short
- 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.