OBD Guide

C0146

Left TCS Solenoid #2 Circuit Malfunction

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$33–167 (est.)

Symptoms

  • Check Engine Light Is On
  • The TCS system does not work or does not work correctly
  • Reduced braking efficiency when slipping

Causes

  • Open or short circuit in solenoid circuit
  • Faulty TCS solenoid
  • Wiring harness damage
  • Connector problems or contact corrosion
  • TCS control unit malfunction

How to Fix

  1. Check the continuity of the solenoid circuit with a multimeter
  2. Inspect the wiring harness and connectors for damage.
  3. Check the solenoid resistance (compare with the standard)
  4. Replace TCS solenoid if necessary
  5. Clean or replace damaged connectors
  6. Reset the error and take a test drive

Related codes

Error C0146 by Vehicle Brand