Car Diagnostics
Testing that helps identify the cause of a warning, symptom, no-start, or electrical concern before repair.
View service ›START WITH THE CONCERN
Choose the closest match. Each service explains what it covers and what happens next.
Check Engine Light Testing
Testing for a steady, flashing, or intermittent check engine light before repair.
View service ›Electrical System Repair
Testing and repair for battery drain, starting or charging problems, wiring faults, sensor concerns, or intermittent electrical failures.
View service ›Battery, Starting & Charging
Testing for battery, no-start, slow-crank, and charging concerns before a part is recommended.
View service ›MORE DIAGNOSTIC HELP
WHAT DIAGNOSTIC TESTING DOES
Start with the vehicle, your description, and when the problem appears. A code or warning can be useful evidence, but it does not name the failed part by itself.
- Separate the warning or symptom from its cause.
- Use when and how the problem happens to choose the next check.
- Compare electrical, mechanical, and related-system evidence instead of guessing.
- Explain the finding and next step before you approve a repair.
WHEN THE CONCERN IS URGENT
Severe shaking, sudden power loss, overheating, smoke or a burning smell, a major leak, impaired braking or steering, or a vehicle that will not start deserves prompt attention. The service page that matches the concern explains whether to stop, park, or call first. Diagnostic testing does not declare a vehicle safe to drive.