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P2641 Powertrain

Torque Management Feedback Signal B

The torque feedback signal B from a second torque user is missing or invalid. The engine controller cannot coordinate torque reduction with this user.

Affected components

  • Secondary torque user
  • Communication bus
  • Wiring harness

Common causes

  • High likelihood: Required CAN message not received in time
  • Medium likelihood: Source module reports an internal fault

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.

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