Check-engine light on? What to do in the first 10 minutes
Steady or flashing makes a big difference. A quick checklist before you panic or ignore it.

Devon Clarke
Lead diagnostic technician
·
5 min read

Steady light
A steady light means the computer stored a fault. It’s usually safe to keep driving for a short time, but book a diagnostic soon.
✓ Check that your gas cap is tight
✓ Note any new noises, smells or shaking
✓ Write down when it came on
Flashing light
A flashing light often means a misfire that can overheat and damage the catalytic converter. Reduce speed, pull over when safe and call us.
Why a code isn’t a diagnosis
A code points to a system, not a part. We confirm the cause with testing so you only pay for the repair you need.
This article is general information. Your owner’s manual and a hands-on inspection come first, so call us if you’re unsure.
General information
This article is general advice, not a diagnosis. Every car is different. If something sounds, smells or feels off, call the shop.

Written by
Devon Clarke
Lead diagnostic technician
ASE A6 Electrical, A8 Engine Performance, L1 Advanced Engine Performance (sample credentials)
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