Input/Turbine Shaft Speed Sensor B Circuit Intermittent
The second input shaft speed sensor signal jumps or drops out intermittently. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
Affected components
- Input shaft speed sensor b
- Wiring harness
Common causes
- High likelihood: Sensor connector not fully seated
- Medium likelihood: Harness chafed against transmission housing
- Low likelihood: Connector with intermittent contact under vibration
Diagnostic notes
- The malfunction indicator lamp may illuminate
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.