OBD Guide

C0538

Motor Control B Circuit Low

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–167 (est.)

Symptoms

  • The passive safety system fault indicator is on
  • Problems with the operation of belt pretensioners
  • Incorrect operation of airbags

Causes

  • Open or short circuit in wiring harness
  • Malfunction of solenoid or squib
  • Damage to the passive safety system controller
  • Poor contact in connectors

How to Fix

  1. Check the wiring harness for damage
  2. Check resistance and voltage in control circuit
  3. Inspect connectors and contacts for oxidation or damage
  4. Replace faulty components (solenoid, squib, controller)

Related codes

Error C0538 by Vehicle Brand