Input/Turbine Speed Sensor A/B Correlation
The two input or turbine shaft speed sensors A and B do not agree within tolerance. Either sensor may be drifting or missing pulses.
Affected components
- Input shaft speed sensor a
- Input shaft speed sensor b
- Tone wheel
Common causes
- High likelihood: Damaged tone wheel teeth
- Medium likelihood: One sensor drifts in air gap or amplitude
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.