Internal Control Module Transmission Range Sensor Performance
The internal transmission range sensor inside the control module (used for redundancy on shift-by-wire systems) does not match the external sensor reading.
Affected components
- Control module
- External range sensor
Common causes
- Medium likelihood: Internal sensor drift
- Medium likelihood: External range sensor drift
- Low likelihood: Sensor element aged beyond calibration window
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
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.