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2022 CHEVROLET BOLT EUV
65 kWh Single Motor FWD•FWD•AUTOMATIC•ev
4 active safety recalls on this vehicle — view recalls
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Repairs0Labor314Torque3680Fluid5DTC1608Battery1Maintenance0Recalls4
P0856moderate severityPowertrain

Traction Control Input Signal

on 2022 Chevrolet Bolt EUV 65 kWh Single Motor FWD · FWD

What this code means

The PCM detects a fault in the traction control input signal to the powertrain. This can disable traction control coordination with the engine and transmission.

Symptoms

  • Traction control light on
  • Reduced engine performance
  • ABS/traction faults present

Common causes

  • Faulty CAN communication with ABS module
  • Wiring fault in signal circuit
  • Failed traction control module
  • Poor ground or connector corrosion

Diagnostic steps

  1. Retrieve codes from PCM and ABS module
  2. Check CAN bus communication integrity
  3. Inspect signal wiring and connectors
  4. Repair circuit or replace faulty module
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🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years. Spot an error? Use the Help link above — a human reads every report.
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