TCM Engine Speed Output Circuit
A circuit fault on the engine speed value the TCM sends to other modules (rev counter, hybrid module).
Affected components
- Tcm engine speed output
Common causes
- High likelihood: Open in output line
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.