Vallejo's Trusted Auto Diagnostics

PRECISION DIAGNOSTICS
YOU CAN TRUST

Computerized diagnostics that pinpoint the problem — not guess at it. From check engine lights to complex electrical issues, we find what others miss and fix it right the first time.

Call Now Our Services
Licensed & Insured
Fast Turnaround
Automotive diagnostic technician using computerized diagnostic equipment on a vehicle engine

Computerized

OBD-II Diagnostics

Scroll
What We Do

OUR SERVICES

Computerized Diagnostics

State-of-the-art OBD-II scanning and diagnostic equipment to read trouble codes, monitor live data, and pinpoint issues with precision.

Check Engine Light

Don't ignore that warning light. We diagnose and resolve check engine issues quickly — from simple sensor failures to complex engine management problems.

Brake Service

Complete brake inspections, pad replacements, rotor resurfacing, and fluid flushes. Your safety is our priority — we get it right every time.

Engine Performance

From tune-ups to major engine repairs, we diagnose and fix performance issues — rough idles, stalling, loss of power, and poor fuel economy.

Electrical Diagnostics

Battery testing, alternator diagnostics, wiring issues, and electrical system troubleshooting. We track down intermittent problems others can't find.

Pre-Purchase Inspection

Buying a used car? We give it a thorough diagnostic check so you know exactly what you're getting into — before you hand over the cash.

Professional automotive workshop with diagnostic equipment and tools
VALLEJO
About Us

YOUR LOCAL EXPERT

Arriaga's Automotive Diagnostic LLC has been serving the Vallejo community with honest, reliable auto repair and diagnostic services. We combine modern computerized diagnostic technology with real mechanic experience to solve problems — not just read codes.

When your check engine light comes on, you don't need a guess — you need an answer. Our diagnostic-first approach means we identify the root cause before any work begins, so you only pay for what actually needs fixing. No upsells. No surprises.

OBD-II Scanning
Honest Assessments
All Makes & Models
Fair Pricing
Why Choose Us

THE ARRIAGA DIFFERENCE

Fast Service

Most diagnostics completed same-day. We respect your time and get you back on the road fast.

Trusted & Honest

We recommend only what you actually need. No unnecessary repairs, no inflated estimates.

Detailed Reports

We explain exactly what's wrong and why — in plain language you can understand, not mechanic jargon.

Community Focused

We're your neighbors in Vallejo. We treat every vehicle like it's our own and every customer like family.

READY TO GET UNFIXED?

Don't let that check engine light ruin your day. Call us today for honest diagnostics and fair pricing — your peace of mind is just one call away.

(707) 655-6143 Email Us
Get In Touch

CONTACT US

Visit Us

707 Benicia Rd
Vallejo, CA 94591-7328

Call Us

We're ready to help

(707) 655-6143

Business Hours

Monday – Friday 8:00 AM – 6:00 PM
Saturday 8:00 AM – 2:00 PM
Sunday Closed
Is this your business?This is my business