Check Engine Light Diagnostics in San Francisco

Fast, Honest, and Accurate Vehicle Diagnostics Since 1979

If your check engine light just came on, don’t wait. At International Sport Motors in SoMa, San Francisco, we provide quick and reliable diagnostic testing for all vehicle types, including hybrids, EVs, and traditional gas-powered vehicles.

We use the same OEM-grade scan tools trusted by dealerships to pinpoint the problem fast, whether it’s an emissions issue, misfire, or a complex onboard computer fault. And with our Digital Vehicle Inspection (DVI) system, you’ll get photo and video documentation of exactly what we find—so you’re never in the dark.

What Causes the Check Engine Light?

Your vehicle’s onboard computer constantly monitors key systems. When something’s off, the check engine light activates. Here are some common causes:

  • Loose or faulty gas cap
  • Malfunctioning oxygen (O2) sensor
  • Worn-out spark plugs or ignition coils
  • Problems in the emissions control system
  • Faulty catalytic converter
  • Transmission or hybrid battery issues
  • Sensor errors or wiring problems

Some issues are minor, but others can affect drivability or emissions and delay can mean more expensive repairs. 

How Our Diagnostic Process Works

  1. Advanced OBD-II Code Scan
    We connect to your car’s onboard diagnostics system to retrieve fault codes in seconds.
  2. System-Specific Testing
    We test affected components (not just read the code) to determine the root cause.
  3. Digital Vehicle Inspection (DVI)
    Get a detailed report with photos, videos, and explanations so you can see exactly what we see.
  4. Transparent Estimate
    We explain your options clearly with no upsells or pressure. Just the facts.
  5. Certified Repairs (if needed)
    If you approve the work, we get it done right with OEM parts and skilled workmanship.

Why Choose International Sport Motors?

  • 🛠️ 45+ Years Serving San Francisco
    Family-owned and trusted since 1979.
  • 🚗 All Makes and Models Welcome
    Domestic, European, hybrid, electric—we service them all.
  • 🔬 State-of-the-Art Diagnostic Tools
    Same scan tech used by manufacturers—no guesswork.
  • 📷 Digital Vehicle Inspections for Full Transparency
    You get a visual breakdown of exactly what’s going on.
  • 📍 Convenient SoMa Location
    Close to Mission District, Potrero Hill, Civic Center, and major transit routes.

Check Engine Light FAQs

Q: Can I keep driving if my check engine light is on?
A: If the light is steady, it’s usually safe to drive to a nearby repair shop. If it’s flashing, it indicates a serious problem (like a misfire) and you should stop driving immediately.

Q: How much does a diagnostic cost?
A: We offer competitively priced diagnostic services and apply the cost toward your repair when approved. We’ll provide a clear quote after inspection.

Q: What’s the benefit of Digital Vehicle Inspections?
A: With our DVI system, you’ll receive photos and videos of any issues found, so you can make an informed decision—no guessing, no pressure.

Q: Do you work on hybrids and EVs?
A: Yes. We’re fully equipped to handle diagnostics for electric and hybrid drivetrains, including Toyota Prius, Tesla, Chevy Volt/Bolt, and more.

Q: Will you reset the check engine light?
A: Only after the necessary repairs or corrections are made. Resetting without fixing the root cause is unsafe and illegal in some cases (especially emissions-related issues).

Visit Us for Check Engine Diagnostics in San Francisco

International Sport Motors
📍 440 9th Street, San Francisco, CA 94103
📞 Call: (415) 551‑9930
🗓️ Book Your Diagnostic Appointment Online