Prescott Check Engine Light

If the check engine light—also known as the CEL—comes on while driving, it’s not necessarily a cause for panic, but it is something to take seriously. In most situations, your car will remain drivable, allowing time to bring it in for a professional evaluation. If you’re in Prescott, check engine light service is fast and easy at the Flagstaff Chevrolet Service Center.

The CEL can illuminate in two ways: steadily or flashing. Both indicate there’s an issue under the hood. A constant light usually means something needs attention soon, while a blinking light signals a more urgent problem requiring immediate attention at a dealership like Flagstaff Chevrolet, which offers accurate CEL testing & diagnosis in Prescott.

When the check engine light turns on, it’s the vehicle’s way of letting you know something isn’t working as it should. While some issues are minor, others can affect performance, emissions, or long-term reliability. This is why having the vehicle looked at is important—even if it still seems to be running normally.

What Does a Flashing Check Engine Light Mean?

When the light starts flashing, it’s often due to an engine misfire. In this case, unburned fuel can enter the exhaust system, potentially damaging the catalytic converter—a major component that’s expensive to replace. If the check engine light begins flashing, it’s best to safely pull over, shut off the engine, and contact roadside assistance. Driving further could cause more extensive damage.

What Does a Steady Check Engine Light Mean?

A steady light doesn’t usually signal an emergency, but it still means your vehicle should be looked at soon. If the light stays on, schedule a visit with the team at Flagstaff Chevrolet. Some of the most common causes include:

• Loose or Damaged Gas Cap: A missing or poorly sealed gas cap can allow fuel vapors to escape, triggering the warning light. Sometimes, simply tightening the cap can solve the issue.
• Catalytic Converter Issues/strong>: If the catalytic converter isn’t operating correctly, fuel efficiency may drop, and the vehicle could fail an inspection. Addressing the issue early can help avoid higher repair costs later.
• Oxygen Sensor Failure/strong>: This sensor monitors exhaust gases and helps adjust the fuel mixture. If it fails, you may notice rough idling, poor mileage, or even black smoke from the tailpipe.
• Mass Airflow Sensor Problems/strong>: The MAF sensor calculates how much air enters the engine. When it malfunctions, it can cause hesitation, reduced power, or increased fuel use.
• Worn Spark Plugs/strong>: These small parts significantly affect engine performance. If the spark plugs fail, the vehicle might experience a misfire, hard starts, or sluggish acceleration.

If the check engine light has come on—steady or flashing—it’s best not to delay. Prompt service can keep a minor issue from becoming a major repair and help extend the life of your vehicle. Contact Flagstaff Chevrolet to schedule a diagnostic appointment or book your visit online. We’re located at 1118 W Hwy 66 in Flagstaff and proudly serve drivers from Prescott and the surrounding communities.

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