Transmission Range Sensor A/B Correlation
The two range sensor channels A and B do not agree on the same gear selector position. Plausibility check fails after debounce.
Affected components
- Transmission range sensor a
- Transmission range sensor b
- Tcm
Common causes
- High likelihood: One sensor mechanically misaligned
- Medium likelihood: Aged switch contacts on one channel
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
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.