Transmission Control System Electrical
A general electrical fault is detected in the transmission control system. The TCM has flagged a circuit problem (open, short, or supply issue) without specifying which component. Look up additional codes from the TCM for detail.
Affected components
- Tcm
- Transmission wiring
Common causes
- High likelihood: Wiring fault inside transmission
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.