Transmission Range Multi-Function Select Circuit Stuck
The multi-function select circuit reports a value that does not change despite operator activity — the rotary encoder is stuck or a push-button is mechanically locked. The TCM ignores further requests until the input becomes plausible.
Affected components
- Range select switch
Common causes
- High likelihood: Stuck rotary encoder
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
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.