OBD Guide

C05C2

Brake Booster Motor A Over Temperature

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Increased force on the brake pedal
  • Reduced braking performance
  • Unusual noises from the engine compartment
  • Dashboard warning

Causes

  • Brake system overload
  • Amplifier motor malfunction
  • Problems with the wiring harness or control circuit
  • Mechanical components jammed
  • Poor cooling of the amplifier motor

How to Fix

  1. Check the brake booster wiring harness and connections.
  2. Diagnose the amplifier motor
  3. Check mechanical components for jamming
  4. If necessary, replace the amplifier motor
  5. Reset the error code and test drive

Related codes

Error C05C2 by Vehicle Brand