Diesel Smog at Carlsbad Auto Repair & Smog
📍 2509 Palomar Airport Rd, Carlsbad, CA 92011 · 📞 (760) 814-2021
QUICK ANSWER
California diesel smog inspection for 1998-or-newer diesel vehicles up to 14,000 lbs GVWR. We check OBD-II codes + visual emissions equipment (DPF, EGR, DEF systems). Deleted emissions = guaranteed fail.
Diesel vehicle smog inspection (1998+, ≤14k GVWR) at Carlsbad Auto Repair & Smog
- Required for 1998+ diesel vehicles ≤14,000 lbs GVWR
- OBD-II scan + visual emissions equipment inspection
- Pricing: 55-85 (often slightly higher than gas due to extra inspection time)
- If DPF/EGR/DEF was deleted, you must restore OEM emissions equipment before passing
- Aftermarket tunes/programmers triggering emissions codes = fail
- We diagnose AND repair emissions issues at our test+repair locations
Common diesel smog questions
My F-250 had its DPF deleted — can you still pass it?
No. California requires intact OEM emissions equipment. Visual inspection will catch deleted DPF immediately. We can quote restoration if you want it brought back to OEM.
Does my F-350 dually fit?
Yes — our test+repair locations have full diesel pickup clearance. We handle Class 1, 2a, and 2b diesels.
What if my truck is over 14k GVWR?
Heavier diesels follow the PSIP (Periodic Smoke Inspection Program), not biennial smog. We can refer you to PSIP-certified facilities for those.