Engine Diagnostics
A check engine light is a question, not a verdict. We use the same factory diagnostic platforms the dealer does — ISTA for BMW, VCDS for Audi/VW, XENTRY for Mercedes, Durametric for Porsche — to read every module on the car, not just the generic OBD-II codes.
Signs you need engine diagnostics service
- Check engine, EPC, or service engine light is on
- Rough idle, misfires, or hesitation under load
- Loss of power or reduced engine performance mode
- Hard starts, long cranks, or stalling
- Strange smells, smoke, or coolant loss
- Failed emissions or readiness monitors won't complete
What we do
- Full multi-module fault code scan and freeze-frame review
- Live data analysis (fuel trims, MAF, O2, knock, ignition)
- Smoke testing for vacuum and boost leaks
- Compression, leak-down, and timing verification
- Module coding and adaptations after repair
- Written diagnostic report with photos and recommendations
Why Denver chooses us
We charge a flat diagnostic fee, not a parts-cannon estimate. If the repair is something we do, the diagnostic is free with the work.
Ready to schedule?
Call us, or send your info and we'll call back within the hour during business hours with a straight answer and a real quote.