Frequently Asked Questions
What does a vehicle computer diagnostic tell you?
A computer diagnostic reads information stored in your vehicle’s onboard computer, including diagnostic trouble codes, sensor data, and system performance. Additional testing is often needed to determine the actual cause of the problem.
Does a check engine light always mean something serious?
Not always. A check engine light can be triggered by anything from a loose gas cap to a more significant engine or emissions problem. Professional diagnostics determine the exact cause.
Can you diagnose problems even if the check engine light isn’t on?
Yes. Many drivability concerns, unusual noises, intermittent electrical issues, and performance problems can be diagnosed even if no warning light is illuminated.
How long does a computer diagnostic take?
The time required depends on the complexity of the problem. Some issues can be identified quickly, while intermittent or multiple-system concerns may require additional testing to accurately diagnose.
Why can’t you replace the part listed in the diagnostic code?
Diagnostic trouble codes identify the system where a problem exists, not necessarily the failed component. Professional testing is needed to confirm the root cause and ensure the correct repair is made the first time.
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