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Check Engine Light

Your vehicle’s check engine light is a warning system made to alert you to potential issues under the hood.

Warning lamps illuminated on a vehicle instrument cluster

Your vehicle’s check engine light is a warning system made to alert you to potential issues under the hood. While the cause may be something minor, it could also indicate a more serious problem requiring immediate attention. At McNeil's Auto Care, our expert technicians provide professional diagnostics and repair services to accurately identify and resolve check engine light issues.

Modern vehicles rely on an onboard computer system to monitor engine performance, emissions, and critical components. When the check engine light turns on, it means the system has detected an abnormality. Our technicians at every location use state-of-the-art diagnostic tools to retrieve error codes, inspect affected components, and determine the best course of action for repairs.

Ignoring a check engine light can lead to reduced performance, lower fuel efficiency, and costly repairs down the road. Whether it’s a faulty sensor, ignition issue, or emission system problem, McNeil's Auto Care has the expertise to diagnose and fix the issue efficiently.

The check engine light can illuminate for various reasons, including a loose gas cap, failing oxygen sensor, faulty spark plugs, or an issue with the catalytic converter. A diagnostic scan and inspection are the best way to determine the exact cause.

If the light is steady, you may be able to drive temporarily, but it’s best to have it checked as soon as possible. A flashing check engine light, however, indicates a more serious issue that requires immediate attention.

If your check engine light is on, don’t wait until the problem gets worse. Visit your nearest McNeil's Auto Care, where we can provide check engine light diagnostics and repairs to get your vehicle back to peak performance. We invite you to schedule an appointment today!

Check Engine Light, answered

Can I keep driving with the check engine light on?
If the light is steady, you can usually drive for a short time, but it should be checked as soon as possible. A flashing check engine light is different and indicates a more serious problem, often a misfire, that can damage the catalytic converter if you keep driving.
How do you diagnose a check engine light issue?
Our technicians use advanced diagnostic scanners to retrieve the error codes stored in your vehicle's computer, then test the systems those codes point to. A code identifies the affected circuit rather than the failed part, so the testing that follows is what separates a guess from a diagnosis.
Why is my check engine light on?
Frequent causes include a loose or failed gas cap, worn spark plugs or ignition coils, a failing oxygen sensor, a catalytic converter problem, or a fault in the emissions system. The range is wide, which is why reading the codes matters before any part is replaced.
Will a check engine light cause my vehicle to fail emissions?
Yes. An illuminated check engine light is an automatic emissions failure in Utah, regardless of what triggered it. Having the fault diagnosed and repaired before testing saves paying for a test the vehicle cannot pass, and we can handle both the diagnosis and the retest.
Why is my check engine light flashing?
A flashing check engine light is more urgent than a steady one. It usually indicates a misfire severe enough to damage the catalytic converter, which is an expensive part. Reduce speed, avoid heavy acceleration, and have the vehicle looked at promptly rather than continuing your journey.
How much does a diagnostic cost?
Diagnostic charges reflect the testing time a fault needs, and a straightforward code differs from an intermittent electrical problem. We confirm the charge before starting, and you get the findings on screen with a repair price you can approve or decline.

Qualifying repairs are covered nationwide

McNeil’s is a NAPA Gold certified shop with ASE certified technicians, and qualifying work carries a 36 month, 36,000 mile warranty honored at participating NAPA AutoCare shops across the country rather than only here.

  • NAPA AutoCare Gold Certified badge
  • NAPA Peace of Mind nationwide warranty, 36 months or 36,000 miles