Computer-guided diagnosis
Read relevant fault information and review it alongside the vehicle’s symptoms.
Discuss your vehicleIndependent German auto service
Diagnostics & check engine service in Rocklin
Check engine light, rough running, hesitation, or a sudden change in fuel economy? Start by investigating the cause.
Serving Rocklin, Roseville, Loomis, and Lincoln.
Your service, explained
A fault code is a starting point.
Computer fault information helps direct an investigation, but it does not by itself identify every failed part. We use OBD-II information and step-by-step troubleshooting to work through the concern. Describe what you noticed, when it happens, and any recent work so our team has the context for diagnosis.
Step-by-step troubleshooting
Inspect and test the relevant systems before discussing findings and repair recommendations.
Discuss your vehicle The people behind your service
A local team and clear communication.
Performance Motor Works is an independent German auto shop in Rocklin. Share your service history and current concerns. We explain the findings and the recommended scope before the work begins.
During your service, we share digital documentation with photos and recommendations, and keep in touch by text, email, or phone.
- Check engine and service-engine warnings
- OBD-II scanning and diagnosis
- Rough running and hesitation concerns
- Symptoms and service history reviewed
More from Dan on check engine lights.
Read Dan’s check-engine guide and the existing BMW diagnostic-computer article for background on the diagnostic process.
Related care for your German vehicle.
Engine repair
Explore the related service and discuss what your vehicle needs.
Explore engine repairAll service options
Maintenance and brakes lead our service pathways, with other existing repair and inspection services available.
Browse servicesWe service BMW, Audi, Volkswagen, MINI, Mercedes-Benz, and Porsche. Qualifying repairs are backed by our 2-year / 24,000-mile warranty; ask about coverage for the proposed work.
Ready to discuss your diagnostics & check engine?
Independent German auto service in Rocklin, California.