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Home >> Chevrolet >> 2018 >> Suburban 3500 HD LT >> Repair and Diagnosis >> External Pages >> Different car >> Section 1 (Antilock Brake System) >> Diagnostic Information And Procedures >> DTC P0856: Traction Control Torque Request Circuit >> Conditions for Setting the DTC

Conditions for Setting the DTC

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The engine control module diagnoses a condition preventing the engine control portion of the traction control function and sends a serial data message to the electronic brake control module indicating that torque reduction is not allowed. The engine control module sets this DTC.

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