Cylinder Head Temperature Sensor B Circuit
The ECM detects a circuit fault on the cylinder head temperature sensor b circuit. Reading cannot be used reliably for control.
Affected components
- Cylinder head temperature sensor b
- Wiring harness
- Ecm
Common causes
- High likelihood: Sensor failed
- Medium likelihood: Wiring or connector fault
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
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.