OBD Guide

C0242

Engine Control Module Indicated Traction Control Malfunction

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–222 (est.)

Symptoms

  • Check Engine Light Is On
  • Disabling the traction control system
  • Deterioration in acceleration dynamics
  • Unstable engine operation

Causes

  • Malfunction of wheel speed sensors
  • Damage to the traction control wiring harness
  • Problems with the ABS/TCS control module
  • ECM malfunction
  • Mechanical damage to the brake system

How to Fix

  1. Check fault codes in the ABS system
  2. Inspect the wiring harness and wheel speed sensor connectors
  3. Check wheel speed sensors for dirt or damage.
  4. Test the ABS/TCS control module
  5. If necessary, replace faulty components
  6. Clear errors and test drive

Related codes

Error C0242 by Vehicle Brand