When something doesn’t feel right with your vehicle, whether it’s a mysterious check engine light, unusual noises, or a dip in performance, the answer lies in car diagnostics. At Duffy’s Auto Service, we understand how frustrating it can be when your car isn’t running as well as it should. Our dealer alternative offers vehicle diagnostics here in St. Paul Park, MN, to get to the root of your car problems quickly.

Located in St. Paul Park, MN, and serving nearby areas like Cottage Grove, Washington County, Newport, and Woodbury, our expert team uses advanced tools and technology to ensure your vehicle gets the care it needs.

What Is Car Diagnostics

Car diagnostics refers to the process of using specialized tools to identify issues within your vehicle's systems. Modern vehicles have complex computer systems that monitor everything from your engine’s performance to safety features like brakes and airbags. The system generates error codes that our technicians can read and interpret when something goes wrong using diagnostic equipment.

At Duffy’s Auto Service, we have access to multiple scan tools to provide a comprehensive car inspection for every car make and model. Even if there’s no immediate problem, periodic car diagnostics can catch potential issues before they escalate.

What to Expect During a Diagnostic Service

Our ASE-certified technicians will discuss the symptoms you’ve noticed and perform a visual inspection. Using advanced scan tools, we’ll read and interpret the error codes generated by your vehicle’s onboard computer. If needed, we’ll perform additional tests on specific components to verify the issue.

We believe in honesty and transparency. Our team will explain what’s wrong, why it happened, and how we can fix it. We also do digital inspections, meaning you’ll be sent photos and comments.

Duffy’s Auto Service has been a trusted name in auto service. We combine decades of experience with cutting-edge technology to deliver unbeatable service. Our courtesy shuttle service and loaner cars make it easy to get diagnostics done without disrupting your day.

Vehicle Diagnostics in Saint Paul Park, MN



If you have concerns about your car, SUV, or truck, we invite you to bring your vehicle to Duffy’s Auto Service for professional car diagnostics and car inspection in Saint Paul Park, MN, that you can trust. Whether you’re local or coming from Cottage Grove, MN, or Newport, MN, we ensure your car stays safe. Call us or stop by today!