Engine-Codes - Buick - P0856 BUICK

P0856 BUICK Code - Traction Control Torque Request Circuit Malfunction

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3
Table of contents

|P0856 BUICK code possible causes

  • Faulty Electronic Brake Control Module (EBCM)
  • EBCM Harness is open or shorted
  • EBCM Circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

|How is the P0856 BUICK code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|What is the cost to diagnose the P0856 BUICK code

Labor: 1.0

The cost to diagnose the P0856 BUICK code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are P0856 BUICK code possible symptoms?

  • ABS Warning Light ON
  • Engine Light ON (or Service Engine Soon Warning Light)

|What is P0856 BUICK code meaning?

When traction control is active, the Electronic Brake Control Module (EBCM). sends a serial data message to the Engine Control Module (ECM) requesting torque reduction. When certain ECM DTCs are set, the ECM will not be able to perform the torque reduction for traction control. A serial data message is sent to the EBCM indicating that traction control is not allowed.

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