---
title: "San Diego Car Doctor — Clean Truck Check, Valley Center, CA"
description: "San Diego Car Doctor in Valley Center, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, smoke opacity (non-OBD) testing…"
url: "https://ctcfinder.com/tester/san-diego-car-doctor-valley-center/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# San Diego Car Doctor

Clean Truck Check tester in Valley Center, CA (San Diego County).

> CTC Finder is an independent directory, not affiliated with CARB. Tester data: CARB Clean Truck Check public tester list, last checked November 1, 2026. Confirm services, hours and prices with the tester.

| Field | Value |
|---|---|
| Location | Valley Center, CA 92082 |
| County | San Diego County |
| Phone | (858) 254-7560 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks San Diego Car Doctor can test

| Your vehicle | Test required | This tester |
|---|---|---|
| Diesel, model year 2013 or newer | OBD scan | Yes |
| Alternative fuel (natural gas, propane), 2018 or newer | OBD scan | Yes |
| Diesel, model year 2012 or older (no OBD) | Smoke opacity test (SAE J1667) plus visual inspection | Yes |
| California-registered motorhome | Same test as above by engine year, once a year | Yes |

## Clean Truck Check testers in San Diego County

San Diego Car Doctor is one of 178 testing businesses in San Diego County on CARB's public tester list. 157 of them offer mobile testing and 91 do smoke opacity tests. In Valley Center itself there are 9 listed businesses, 9 of them mobile.

## When your truck is due

Most trucks test twice a year, on a schedule tied to the DMV registration expiration date. CARB says OBD trucks move to four tests a year beginning October 2027. California-registered (non-commercial) motorhomes and agricultural vehicles test once a year. See the [deadline guide](https://ctcfinder.com/guide/deadlines-2026-2027/). You can test up to 90 days before a deadline. Free email reminders: https://ctcfinder.com/reminders/

## Frequently asked questions

### Does San Diego Car Doctor offer mobile Clean Truck Check testing?

Yes. San Diego Car Doctor says on CARB's tester list that it offers mobile testing, so it can come to your yard or job site. Ask about a trip fee when you call.

### Can San Diego Car Doctor test a 2012 or older diesel truck?

Yes. San Diego Car Doctor lists smoke opacity testing, the test CARB requires for diesel trucks of model year 2012 and older (no OBD). See [OBD vs smoke opacity](https://ctcfinder.com/guide/obd-vs-smoke-opacity-test/).

### How much does San Diego Car Doctor charge for a Clean Truck Check?

San Diego Car Doctor has not published prices with us; call (858) 254-7560 for a quote. Published California prices are usually $50–$135 per vehicle for an OBD test and $190–$200 for a smoke opacity test, plus CARB's annual fee ($32.13 in 2026). See the [cost guide](https://ctcfinder.com/guide/cost/).

### Is San Diego Car Doctor a CARB-credentialed tester?

San Diego Car Doctor appears on CARB's public Clean Truck Check tester list, last checked November 1, 2026. Only credentialed testers can submit results to CARB; after the test, confirm the passing result shows for your vehicle in CTC-VIS.

## Other testers nearby

- **[Garretts Smog](https://ctcfinder.com/tester/garretts-smog-valley-center/)** — 11651 Minneola Cir, Valley Center, CA 92082 — (760) 471-2179 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Go Rigworx - Mobile](https://ctcfinder.com/tester/go-rigworx-mobile-valley-center/)** — 14103 Margarita Lane, Valley Center, CA 92082 — (619) 775-9275 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[James G Vallez](https://ctcfinder.com/tester/james-g-vallez-valley-center/)** — Valley Center, CA 92082 — (760) 644-0329 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Mile Marker Five](https://ctcfinder.com/tester/mile-marker-five-valley-center/)** — Valley Center, CA 92082 — (760) 522-5021 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Moreno Mobile Clean Truck Check](https://ctcfinder.com/tester/moreno-mobile-clean-truck-check-valley-center/)** — 27634 Heritage, Valley Center, CA 92082 — (760) 532-1673 — 1 mi. Services: mobile testing.
- **[MPower](https://ctcfinder.com/tester/mpower-valley-center/)** — 29248 Fox Run Ln, Valley Center, CA 92082 — (760) 535-7716 — 1 mi. Services: mobile testing, OBD testing.