Traction Control Input Signal High
The traction control input signal to the ECM reports a input signal high condition. Engine torque reduction during wheel slip cannot be commanded reliably.
Affected components
- Traction control module
- Wiring harness
- Ecm
Common causes
- High likelihood: Signal wire shorted to B+
- Medium likelihood: TCS module output high
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.