Check Engine Light & Diagnostics in Pullman, WA

When your check engine light comes on, your vehicle is signaling that its onboard computer has detected an issue affecting engine performance, emissions, or related systems. Even if the vehicle seems to drive normally, stored fault codes indicate something is not operating within expected parameters.

 

At Heritage Auto Repair, we provide advanced diagnostic services for drivers throughout Pullman and surrounding communities. Our technicians use professional scan tools and testing procedures to accurately identify the root cause of the issue.

Common causes of check engine lights include:
  • Engine misfires
  • Oxygen sensor failure
  • EVAP system leaks
  • Ignition coil issues
  • Mass airflow sensor problems
  • Fuel system pressure issues
  • Vacuum leaks
  • Electrical communication faults

Frequently Asked Questions – Check Engine Light & Diagnostics