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P2642 Powertrain

Torque Management Feedback Signal B Range/Performance

The torque feedback signal B is present but its value is implausible against measured engine load and speed. Sender calibration or sensor offset is suspected.

Affected components

  • Secondary torque user
  • Torque sensor

Common causes

  • Medium likelihood: Sender calibration drift
  • Medium likelihood: Bus value corrupted by EMI
  • 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.

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