Crankshaft Position Sensor B Circuit Intermittent
Crank sensor B signal jumps or drops out intermittently — connector or wiring issue. The crankshaft position sensor provides RPM and crank angle — without a valid signal, no ignition and no injection. Engine will not start or stalls instantly.
Affected components
- Crankshaft position sensor
Common causes
- High likelihood: Intermittent connector
- Low likelihood: Connector with intermittent contact under vibration
- Low likelihood: Harness routed against vibrating component
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
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.