---
title: "S&J Auto Service — Clean Truck Check, Jackson, CA"
description: "S&J Auto Service in Jackson, CA is on CARB's Clean Truck Check tester list. Offers OBD testing, smoke opacity (non-OBD) testing, motorhome testing. Phone…"
url: "https://ctcfinder.com/tester/s-and-j-auto-service-jackson/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# S&J Auto Service

Clean Truck Check tester in Jackson, CA (Amador 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 | 220 Scottsville Blvd Suite A, Jackson, CA 95642 |
| County | Amador County |
| Phone | (209) 217-8150 |
| Mobile testing | No |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks S&J Auto Service 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 |

If you need a tester at your yard, the nearest listed tester that offers mobile testing is Lynchsauto in Jackson, about 1 mile away. [See listing](https://ctcfinder.com/tester/lynchsauto-jackson/).

## Clean Truck Check testers in Amador County

S&J Auto Service is one of 7 testing businesses in Amador County on CARB's public tester list. 6 of them offer mobile testing and 4 do smoke opacity tests. In Jackson itself there are 3 listed businesses, 2 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 S&J Auto Service offer mobile Clean Truck Check testing?

Not according to CARB's tester list; plan to bring the truck to the tester. The nearest listed mobile tester is [Lynchsauto](https://ctcfinder.com/tester/lynchsauto-jackson/) (about 1 mile).

### Can S&J Auto Service test a 2012 or older diesel truck?

Yes. S&J Auto Service 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 S&J Auto Service charge for a Clean Truck Check?

S&J Auto Service has not published prices with us; call (209) 217-8150 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 S&J Auto Service a CARB-credentialed tester?

S&J Auto Service 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

- **[Lynchsauto](https://ctcfinder.com/tester/lynchsauto-jackson/)** — 12568 Jackson Gate Rd, Jackson, CA 95642 — (209) 304-0399 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Mobile CARB Testing & Repair](https://ctcfinder.com/tester/mobile-carb-testing-and-repair-jackson/)** — 409 Anita St, Jackson, CA 95642 — (209) 256-4627 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Johnson Enterprises](https://ctcfinder.com/tester/johnson-enterprises-san-andreas/)** — 1801 Leonard Ct, San Andreas, CA 95249 — (209) 890-0369 — 13 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[A&T Mobile Vin Verification](https://ctcfinder.com/tester/a-and-t-mobile-vin-verification-valley-springs/)** — Valley Springs, CA 95252 — (209) 810-2882 — 13 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Hunter Moody](https://ctcfinder.com/tester/hunter-moody-valley-springs/)** — Valley Springs, CA 95252 — (209) 217-2691 — 13 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Sierra Services](https://ctcfinder.com/tester/sierra-services-valley-springs/)** — 5010 Olive Orchard Road, Valley Springs, CA 95252 — (209) 914-0388 — 13 mi. Services: mobile testing, OBD testing, motorhome testing.