OBD Guide

C0018

Left Rear Inlet Control

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

Symptoms

  • The passive safety system fault indicator is on
  • Deployment of airbags or pretensioners in unexpected situations
  • Lack of response from the passive safety system in an accident

Causes

  • Open or short circuit in wiring harness
  • Shock sensor malfunction
  • Damage to the restraint system control module
  • Corrosion of contacts in connectors

How to Fix

  1. Diagnose the passive safety system using a scanner
  2. Check the integrity of the wiring harness and connectors
  3. Test shock sensors and pretensioners
  4. Replace faulty components

Related codes

Error C0018 by Vehicle Brand