Automotive Diagnostics for Sebastopol Drivers
Advanced computer diagnostics and expert problem identification. Just 20 minutes from Sebastopol via Highway 12.
When You Need Professional Diagnostics
Modern vehicles are complex computer-controlled machines. Accurate diagnosis is the first step to effective repair.
Warning Lights
Check engine, ABS, airbag, or other dashboard warning lights
Performance Issues
Poor fuel economy, rough idle, hesitation, or power loss
Strange Symptoms
Unusual noises, vibrations, smells, or handling problems
Pre-Purchase
Comprehensive inspection before buying a used vehicle
Comprehensive Diagnostic Services
Our Diagnostic Approach
At Rohnert Park Transmission & Auto Repair, we combine advanced diagnostic technology with 30+ years of hands-on experience. This combination is essential for accurate diagnosis—computers provide data, but experience interprets it.
Advanced Equipment
Factory-level scan tools, oscilloscopes, and specialized testers for accurate readings across all makes and models.
Expert Analysis
Our ATRA & ASE certified technicians interpret diagnostic data to find root causes, not just symptoms.
Serving Sebastopol & West Sonoma County
We proudly serve drivers from Sebastopol, Graton, Forestville, and throughout West Sonoma County. Our shop is conveniently located just 14 miles from downtown Sebastopol—about a 20-minute drive via Highway 12.
Whether you're dealing with a mysterious check engine light, experiencing performance problems, or want a thorough inspection before a road trip, our diagnostic services give you the answers you need.
Easy Access from Sebastopol
Take Highway 12 East toward Santa Rosa, then continue to Rohnert Park. We're located at 6501 Hunter Dr, just off the highway with plenty of parking.
Frequently Asked Questions
How long does automotive diagnostics take?
Basic diagnostic scans typically take 30-60 minutes. Complex electrical or drivability issues may require 1-2 hours of diagnostic time for thorough analysis and accurate problem identification.
Do you service vehicles from Sebastopol?
Absolutely! We proudly serve Sebastopol and all of West Sonoma County. We're just 14 miles away, about a 20-minute drive via Highway 12. Many Sebastopol residents trust us for their diagnostic needs.
Why not use a free code reader from the auto parts store?
Free code readers only provide basic trouble codes without context. Our professional diagnostic equipment provides freeze frame data, live sensor readings, manufacturer-specific codes, and the expertise to interpret results accurately.
What types of problems can you diagnose?
We diagnose engine performance issues, transmission problems, electrical faults, ABS and brake system issues, air conditioning problems, starting and charging issues, and mysterious warning lights.
Do you diagnose hybrid and electric vehicles?
Yes, we have diagnostic equipment for hybrid vehicles and are expanding our EV diagnostic capabilities. We can diagnose most common issues on hybrid models from Toyota, Honda, Ford, and other manufacturers.
What if you can't find the problem?
With 30+ years of experience and advanced diagnostic equipment, we find the root cause of most issues. For particularly complex problems, we'll be upfront about what additional diagnostic time may be needed.
Is your diagnostic fee applied to repairs?
Contact us about our current diagnostic fee policy. We're always fair and transparent about costs, and we'll discuss options before any work begins.
Can you diagnose problems with older vehicles?
Yes! We have experience with both modern computer-controlled vehicles and older cars. We use a combination of scan tools, multimeters, and traditional diagnostic techniques as needed.
Schedule Diagnostics Today
Get accurate answers about what's wrong with your vehicle.
(707) 584-7727Rohnert Park, CA 94928
Fri: 8:00 AM - 5:00 PM
Why Choose Us
- 30+ years diagnostic experience
- ATRA & ASE certified technicians
- Advanced diagnostic equipment
- All makes and models
- Honest, accurate assessments
- Clear explanations of findings
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Trusted & Certified
Get Answers About Your Vehicle
Don't guess—know exactly what's wrong. Schedule professional diagnostics today.