What's involved
What this repair actually is.
EGT sensors monitor exhaust heat at points before and after the catalyst or DPF so the computer can manage regeneration and protect components from meltdown. When one fails — most common on diesels — regens are blocked or mistimed and warning lights appear; we replace the failed sensor and verify readings track correctly across the system.
Symptoms
How you can tell.
- Check engine light with an EGT sensor code
- DPF regeneration not completing (diesels)
- Reduced power or limp mode
- Failed inspection due to active emissions codes
If you delay
Without accurate temperature data the computer blocks DPF regens, letting soot build until the filter needs cleaning or replacement.
Educational estimate. Real pricing depends on your vehicle, the inspection, parts availability, taxes, and shop rates. Use this as a guide while you shop quotes.