Check Engine Light
Check Engine Light Service in Rockville, MD
Don't ignore the warning. Our technicians with over 13 years of experience use advanced diagnostics to find and fix the problem fast. Serving the entire DMV area.
Engine Diagnostic Services
The check engine light is your vehicle's way of telling you something needs attention. At Fitzpatrick Auto Repair, we use professional-grade diagnostic equipment to read engine codes and identify the exact issue.
From simple fixes like a loose gas cap to complex engine repairs, we'll give you an honest assessment and transparent pricing.
OBD-II Code Reading
Emissions System Repair
Oxygen Sensor Replacement
Catalytic Converter Service
Mass Airflow Sensor Repair
Ignition System Diagnostics
Fuel System Inspection
Evaporative Emission Repair
Why Choose Us for Engine Diagnostics
13+ Years Experience
Advanced diagnostic expertise backed by over 13 years of training.
Honest Assessments
We'll never recommend work you don't need.
Customer-First Service
Trusted by DMV drivers.
Check Engine Light FAQs
What does the check engine light mean?
It indicates your vehicle's computer has detected an issue. It can range from a loose gas cap to a serious engine or emissions problem. A diagnostic scan is needed to pinpoint the cause.
Is it safe to drive with the check engine light on?
A steady light usually means a non-emergency issue, but you should get it checked soon. A flashing check engine light indicates a serious problem — pull over safely and call us immediately.
How much does a check engine light diagnostic cost?
Our diagnostic starts at $99 and includes a full OBD-II scan, visual inspection, and detailed report of the issue. This fee is often applied toward the repair.
Can a check engine light turn off on its own?
Sometimes, but even if the light goes off, the underlying issue may still exist. We recommend getting a diagnostic to ensure nothing serious is going on.