Check Engine Light Diagnostics in
Costa Mesa, CA

That little orange light on your dashboard may not seem urgent at first—but it’s your vehicle’s way of telling you something’s wrong. The check engine light is tied to your car’s onboard diagnostic system, which constantly monitors engine performance, emissions, and key components. When something falls out of range, the system triggers the warning light. While the cause could be as simple as a loose gas cap, it could also signal more serious issues like misfires, failing oxygen sensors, or catalytic converter problems. Ignoring it could lead to increased emissions, reduced fuel efficiency, and long-term engine damage.

At A & G Imports, we take check engine light diagnostics seriously. Our Costa Mesa team combines years of hands-on experience with industry-leading tools to read and interpret diagnostic trouble codes (DTCs) accurately. We go beyond just pulling codes—we perform thorough testing to confirm the root cause before recommending repairs. This extra level of care helps prevent misdiagnoses and unnecessary part replacements. Whether your vehicle is showing symptoms or simply illuminating the light with no obvious issue, our technicians can help you understand what’s happening and what needs to be done. It’s part of our commitment to providing honest, efficient service you can trust—every time.

Why Choose A & G Imports for Check Engine Light Diagnostics

With a history that dates back to 1981, A & G Imports has become a trusted name in Costa Mesa for all things automotive—including check engine light diagnostics. As a Technet-certified shop, we meet strict industry standards for knowledge, tools, and service quality. Every diagnostic and repair is backed by our 24-month/24,000-mile nationwide warranty, giving you confidence on the road wherever you drive. Plus, as a family-run shop, we treat our customers with the honesty and respect we’d give our own family.

How We Diagnose Check Engine Light Issues with Precision

When your vehicle comes in for diagnostics, we begin with a comprehensive scan of your onboard systems using professional-grade diagnostic equipment. From there, we interpret trouble codes, evaluate related components, and test critical systems such as sensors, ignition coils, fuel injectors, and more. This methodical process helps us identify the exact problem instead of guessing—ensuring the most cost-effective and lasting repair. We’ll always walk you through the results and offer straightforward guidance, so you know exactly what’s going on and what to expect.

Key Benefits of Choosing A & G Imports:

• Technet-certified shop for quality and trust
• 24-month/24,000-mile nationwide warranty
• Accurate diagnostics with industry-grade tools
• Service for all makes and models
• Family-owned and operated since 1981