Torque Management Request Input Signal B
General electrical fault on the second torque-management request input B. Used when more than one module needs to request torque adjustments — typically TCM on input A and ABS/ESC on input B, or chassis vs powertrain. With B invalid, only the A-side request is honoured.
Affected components
- Torque management input b
Common causes
- High likelihood: Open or shorted wire / invalid CAN message
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.