---
title: "Cen-Cal Truck Check — Clean Truck Check, Atwater, CA"
description: "Cen-Cal Truck Check in Atwater, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, motorhome testing. Phone, address and nearby…"
url: "https://ctcfinder.com/tester/cen-cal-truck-check-atwater/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Cen-Cal Truck Check

Clean Truck Check tester in Atwater, CA (Merced 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 | 3292 Mariner Ct, Atwater, CA 95301 |
| County | Merced County |
| Phone | (209) 628-3882 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Cen-Cal Truck Check 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 | Not listed |
| California-registered motorhome | Same test as above by engine year, once a year | Yes |

For a 2012 or older diesel, the nearest listed tester with smoke opacity testing is Harpreet Singh Jolly in Livingston, about 6 miles away. [See listing](https://ctcfinder.com/tester/harpreet-singh-jolly-livingston/).

## Clean Truck Check testers in Merced County

Cen-Cal Truck Check is one of 40 testing businesses in Merced County on CARB's public tester list. 35 of them offer mobile testing and 12 do smoke opacity tests. In Atwater itself there are 5 listed businesses, 5 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 Cen-Cal Truck Check offer mobile Clean Truck Check testing?

Yes. Cen-Cal Truck Check 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 Cen-Cal Truck Check test a 2012 or older diesel truck?

Cen-Cal Truck Check does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Harpreet Singh Jolly](https://ctcfinder.com/tester/harpreet-singh-jolly-livingston/) (about 6 miles). Trucks from 2013 on get an OBD scan instead.

### How much does Cen-Cal Truck Check charge for a Clean Truck Check?

Cen-Cal Truck Check has not published prices with us; call (209) 628-3882 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 Cen-Cal Truck Check a CARB-credentialed tester?

Cen-Cal Truck Check 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

- **[Israel Vargas](https://ctcfinder.com/tester/israel-vargas-atwater/)** — Atwater, CA 95301 — (209) 321-8975 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Mario Alejandro Garcia Tester](https://ctcfinder.com/tester/mario-alejandro-garcia-tester-atwater/)** — 2385 Redwood Ave, Atwater, CA 95301 — (209) 263-2529 — 1 mi. Services: mobile testing, OBD testing.
- **[Monster Equipment](https://ctcfinder.com/tester/monster-equipment-atwater/)** — 554 E Bellevue Rd, Atwater, CA 95301 — (209) 605-8707 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Rafael Orozco](https://ctcfinder.com/tester/rafael-orozco-atwater/)** — Atwater, CA 95301 — (209) 600-9941 — 1 mi. Services: mobile testing, OBD testing.
- **[Gurpreet Atwal](https://ctcfinder.com/tester/gurpreet-atwal-livingston/)** — Livingston, CA 95334 — (209) 913-9160 — 6 mi. Services: mobile testing, OBD testing.
- **[Harpreet Singh Jolly](https://ctcfinder.com/tester/harpreet-singh-jolly-livingston/)** — Livingston, CA 95334 — (559) 999-2732 — 6 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.