Check Engine & Diagnostics Guide: Colorado's Front Range

Overview

A check engine light can mean anything from a loose gas cap to engine problems. Diagnostics find the cause.

A flashing light usually means stop driving soon.

You approve the work. A good shop explains the findings and gets your OK before repairs.
Old parts can be returned. Ask to see or keep replaced parts if you want proof of the repair.
Describe the symptoms. Noises, warning lights, smells and when it happens all help a mechanic.
Expect diagnostics. Most shops inspect or scan the vehicle before quoting a repair.
Ask for a written estimate. Many states give consumers rights around written estimates and authorization.

Recalls may apply. Check for open recalls, which dealers often fix free.
Specialty shops exist. Some shops focus on certain brands, transmissions or diesel work.
Parts choices affect cost. OEM, aftermarket and used parts vary in price and warranty.
Warranties differ. Ask how long parts and labor are covered.
Labor rates differ by shop. Hourly rates and book times explain much of the price gap between shops.

Note the year, make, model and trim of the vehicle, and the paint color name or code if you know it.
Have your insurance claim number ready if you have filed one, along with the adjuster's contact details.
Describe whether the vehicle is drivable, and whether any warning lights, alignment changes or noises appeared after the damage.
Take clear photos of the damage from several angles and distances, in good light, before anything is moved or repaired.
Say whether you need a rental car or plan to rely on coverage for one.