Check Engine Light & Auto Diagnostics in Philadelphia
Is your check engine light on? Car shaking? Stalling? Losing power?
At CALS Diagnostic Auto Repair, we specialize in accurate vehicle diagnostics in Philadelphia. We don’t guess — we test.
Modern vehicles require proper scanning tools and experience. That’s what we provide.
At CALS Diagnostic Auto Repair, we use professional scan tools and hands-on inspection to identify the exact problem.
Our Diagnostic Process Includes:
✔ Computerized scan tool analysis
✔ Engine performance testing
✔ Electrical system inspection
✔ Sensor and module checks
✔ Starting & charging system testing
We don’t just read codes — we diagnose the cause.

PROFESSIONAL VEHICLE DIAGNOSTICS
CHECK ENGINE LIGHT ON? DON'T GUESS — LET US DIAGNOSE IT.
Our diagnostic service goes beyond simply reading trouble codes. We test and inspect your vehicle to help identify the actual cause of the problem and explain our findings before repairs are performed.
DIAGNOSTIC FEE
Cars — Starting at $150
SUVs, Trucks & Larger Vehicles — Starting at $180
LABOR RATE
Cars — Starting at $130/hour
SUVs, Trucks & Larger Vehicles — Starting at $150/hour
Please note: Diagnostic fees are separate from repair labor and are not applied toward the cost of repairs. Diagnostic pricing may vary depending on the vehicle and complexity of the concern. We will explain the diagnostic process and applicable pricing before work begins.
WE DON'T GUESS — WE TEST.
🔥 FREE DIAGNOSTIC WITH REPAIR
If you approve the recommended repair, your diagnostic fee is waived.
No unnecessary repairs. No confusion. Just clear answers.