Shift Fork Position Sensor A/B Correlation
The position signals of shift fork sensors A and B do not correlate as expected for the active gear pre-selection. Plausibility check fails.
Affected components
- Shift fork position sensor a
- Shift fork position sensor b
- Tcm
Common causes
- High likelihood: Offset between the two sensors after replacement
- Medium likelihood: Sensor harness incorrectly swapped
Possible symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Diagnostic notes
- The malfunction indicator lamp may illuminate
- Reduced-power or limp mode may occur
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.