Torque Management Request Input Signal A
The ECU detects an invalid torque-management request signal A from another control unit (e.g. transmission, ESP, ABS) on the CAN bus. Cooperative torque control cannot be performed as expected.
Affected components
- Can bus
- Tcm
- Abs module
Common causes
- High likelihood: CAN communication error
- Medium likelihood: Fault in requesting module
Diagnostic notes
- The malfunction indicator lamp may illuminate
- Reduced-power or limp mode may occur
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.