Accurate Diagnostics for Every Vehicle

Get to the root of any issue with expert diagnostics and honest recommendations from our trusted team.

Comprehensive Vehicle Diagnostics

When your dashboard lights up or your vehicle runs differently, accurate diagnostics are the first step to a reliable repair. At Peterson Automotive and Diesel, our skilled technicians use advanced scan tools to analyze engine codes, electrical systems, and onboard computers. We serve all makes and models in Washington, IL, providing detailed digital inspection reports and straightforward explanations. Our commitment to transparency ensures you only receive the repairs your vehicle truly needs.

Pinpointing Problems with Advanced Tools

Modern vehicles rely on complex computer systems that require specialized equipment to diagnose accurately. We take the guesswork out of repairs, pinpointing issues quickly—whether it's a misfire, emissions error, or sensor failure. Our team explains the root cause, walks you through the recommended repair options, and provides honest pricing so you stay in control. We’re committed to efficient, effective service so you can get back on the road with confidence.

Stay Ahead of Repairs with Regular Diagnostics

Routine diagnostics can catch minor issues before they become costly repairs. With Peterson Automotive and Diesel, you benefit from experience, expertise, and a customer-first approach. Our digital reports and family-owned care ensure you understand every step, empowering you to make informed decisions about your vehicle’s health.

Our Auto Repair Services