Auto Diagnostics & Electrical Repair

Auto Diagnostics & Electrical Repair

Modern vehicles rely on complex computer and electrical systems that control everything from engine performance to safety features. Our experienced technicians use factory-level scan tools to read diagnostic trouble codes, trace electrical faults, perform engine tune-ups, and repair everything from starters and alternators to sensors and wiring harnesses. When your check engine light comes on, we find the real problem — not just clear the code.

Why Professional Diagnostics Matter

A check engine light can mean anything from a loose gas cap to a failing catalytic converter. Auto parts stores offer free code reads, but a trouble code is just a starting point — not a diagnosis. Our technicians interpret the codes in context, using live data streams, freeze-frame data, and systematic testing to identify the actual failed component. This approach saves you money by avoiding unnecessary part replacements and getting the repair right the first time.

Electrical System Expertise

Today's vehicles contain miles of wiring and dozens of electronic control modules. Electrical problems can cause a wide range of symptoms — intermittent starting issues, malfunctioning power windows and locks, flickering lights, parasitic battery drains, and communication errors between modules. Our technicians have the training and tools to trace electrical faults methodically, from corroded connectors and chafed wiring to failed relays and control modules.

Check Engine Light & Diagnostics in San Francisco

A check engine light is also the number-one reason vehicles fail California's smog check, so San Francisco drivers can't afford to ignore it. Don't let warning lights or unusual electrical behavior slide — these issues rarely resolve on their own and often get worse. At our Folsom Street shop we provide clear explanations of every issue we find and honest recommendations for repair. Bring your vehicle in for a professional diagnosis and get answers you can trust.

What's Included

• Check engine light diagnostics
• Engine tune-ups
• Starter and alternator repair
• Sensor replacement (O2, MAP, MAF, etc.)
• Wiring harness repair
• Electrical system troubleshooting

Signs You May Need Diagnostics & Electrical

• Check engine light or other warning lights are on
• Engine misfires, hesitates, or stalls
• Decreased fuel economy
• Difficulty starting the vehicle
• Electrical components (windows, locks, lights) malfunction

Frequently Asked Questions

Serving San Francisco & Surrounding Areas

Conveniently located on Folsom Street in San Francisco's SoMa district provides diagnostics & electrical service to drivers throughout the area, including: