OBD Readiness Guide

Understanding OBD (On-Board Diagnostic) readiness is crucial for passing your Clean Truck Check inspection. This guide explains what OBD readiness means and how to ensure your truck is ready for testing.

What is OBD Readiness?

OBD readiness refers to the status of your truck's emission monitoring systems. These systems need to complete their self-tests before a valid emissions test can be performed.

Important Note

Your truck must complete a drive cycle to set readiness monitors. This typically requires driving under various conditions for 15-30 minutes.

Common Readiness Monitors

Required Monitors

  • Catalyst System
  • Fuel System
  • Comprehensive Components
  • EGR System

Additional Monitors

  • Oxygen Sensor
  • Heated Catalyst
  • Evaporative System
  • Secondary Air

How to Prepare for Testing

  1. Ensure the Check Engine light is off
  2. Complete a full drive cycle before testing
  3. Avoid disconnecting the battery
  4. Maintain proper engine temperature
  5. Address any known mechanical issues

Need Help with OBD Testing?

Our technicians can help diagnose and resolve OBD readiness issues to ensure your truck passes inspection.