Torque Management Request Input Signal A Range/Performance
The ECM receives torque-management requests from other modules (TCM during shifts, ABS/ESC during traction events, hybrid controller). Input A is electrically intact but its values do not match the system model — out-of-range steps, jumps, or persistent values that other modules cannot confirm.
Affected components
- Torque management input a
Common causes
- High likelihood: Requesting module sending invalid values
- Medium likelihood: Communication bus corruption between modules
- Low likelihood: Sensor element aged beyond calibration window
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.