A check engine light can represent anything from a loose gas cap to a misfiring cylinder or a failing catalytic converter—the only way to know is to read the fault codes stored in your vehicle's computer. If the light is steady, it indicates a stored fault that's affecting emissions or performance. If it's flashing, that signals an active misfire, which can damage your catalytic converter within minutes—reduce speed and get it diagnosed the same day. At Scott's, we scan the codes, explain exactly what they mean in plain language, and give you an honest assessment of urgency and cost before recommending any repair.
We scan your vehicle's fault codes with professional diagnostic equipment that captures live sensor data and freeze frame information—not just the basic code number. From there we explain what the code means, what caused it, and what it will take to fix it, in plain language with no pressure. We verify the fault is real before recommending parts, because guessing at the cause based on a code number alone leads to unnecessary repairs. Learn more about our Complete Auto Service service.
From diagnosis to repair, we keep you informed every step of the way.
Call or text us to describe what you're experiencing.
Bring your vehicle in for a thorough inspection.
We explain what we found and quote before any work begins.
Experienced technicians complete the repair with quality parts.
We test drive and verify the repair before returning your car.
A steady check engine light means something needs attention but isn't an immediate emergency. A flashing check engine light means stop driving—the engine is actively misfiring and continued driving can destroy the catalytic converter in minutes. Either way, come in for diagnosis.
We use professional scan tools that read manufacturer-specific codes and capture live sensor data—not just the basic code number. We explain what the code means in plain language and tell you the urgency before recommending any repair.
Multiple separate faults can trigger the same light. If a different code returned, it's a new problem. If the exact same code returned, the root cause may not have been fully addressed. We always verify the fault is real and find the underlying cause rather than just clearing codes.
These are the most common reasons drivers experience this symptom.
A failing O2 sensor is one of the most frequent check engine light causes and affects fuel economy.
A degraded converter triggers P0420/P0430 codes when efficiency falls below EPA thresholds.
A failing gas cap causes evaporative emission system codes—often the simplest fix.
Misfires from worn spark plugs or failing coil packs trigger multiple fault codes.
Not sure if this is your issue? Browse other common problems we fix.
Contact Scott's Auto and Clutch today for honest service and expert repairs.
144 W Crystal Ave, South Salt Lake, UT 84115