Precision Vehicle Diagnostics

Using advanced tools and knowledge to accurately diagnose and solve your car's problems.

Advanced Vehicle Diagnostics

Modern vehicles are complex networks of computers and sensors. When a warning light appears or a driveability issue arises, you need seasoned evaluation. We utilize top-tier scan tools and software to communicate with your vehicle's numerous control modules, going far beyond reading basic trouble codes. Our crew interpret live data streams, monitor sensor inputs, and perform active tests to pinpoint the root cause of the problem. This methodical approach saves you money by ensuring we fix the issue correctly the first time.


Our Diagnostic Process

We start by interviewing you to understand the symptoms you're experiencing. Then, we connect our diagnostic computer to retrieve stored codes and freeze frame data from the event. The real work begins with analyzing live data while the vehicle is running, comparing values against known good parameters. We may perform circuit tests, check for technical care bulletins, or use oscilloscopes to view electronic signals. This comprehensive process leads to an accurate diagnosis and a clear explanation of the necessary repairs.


Solving Complex Automotive Puzzles

Some problems are intermittent or don't set a trouble code, making them incredibly frustrating. Our crew are trained problem-solvers with a deep understanding of automotive systems and electronics. We approach these challenges logically, testing one system at a time to isolate the fault. Whether it's a phantom electrical drain, an intermittent misfire, or a network communication error, we have the patience and skill to find it. Trust Leonardi Automotive to solve your vehicle's most perplexing issues.

Services We Offer


Find the Root Cause

Our step-by-step method for uncovering the true source of your vehicle's issues.

Leonardi Automotive

7426 Redwood Boulevard, Novato, California 94945, USA

(415) 897-1503