OBD Guide

P0857

Traction Control Input Signal Range/Performance

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Check engine light is on
  • Traction control turns off
  • Reduced braking performance
  • Unstable operation of the car when driving
  • Wheel slip

Causes

  • Wheel speed sensor malfunction
  • Damage to wiring or connectors
  • Traction control module malfunction
  • Problems with the accelerator pedal position sensor
  • ABS module malfunction

How to Fix

  1. Check wheel speed sensors for damage
  2. Inspect wiring and connectors for corrosion or breaks.
  3. Check the operation of the accelerator pedal position sensor
  4. Scan the ABS module for errors
  5. Replace faulty components

Related codes

Error P0857 by Vehicle Brand