---
title: "RoadWrench Diesel — Clean Truck Check, Moreno Valley, CA"
description: "RoadWrench Diesel in Moreno Valley, CA is on CARB's Clean Truck Check tester list with 2 credentialed testers. Offers mobile testing, OBD testing. Phone…"
url: "https://ctcfinder.com/tester/roadwrench-diesel-moreno-valley/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# RoadWrench Diesel

Clean Truck Check tester in Moreno Valley, CA (Riverside 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 | 25029 Graduar Ct, Moreno Valley, CA 92557 |
| County | Riverside County |
| Phone | (951) 501-3603 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | No |
| Credentialed testers | 2 |
| Last verified | 2026-11-01 |

## Which trucks RoadWrench Diesel 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 | Not listed |

For a 2012 or older diesel, the nearest listed tester with smoke opacity testing is Inland Empire Clean Truck Check in Moreno Valley, about 1 mile away. [See listing](https://ctcfinder.com/tester/inland-empire-clean-truck-check-moreno-valley/).

## Clean Truck Check testers in Riverside County

RoadWrench Diesel is one of 251 testing businesses in Riverside County on CARB's public tester list. 233 of them offer mobile testing and 102 do smoke opacity tests. In Moreno Valley itself there are 16 listed businesses, 14 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 RoadWrench Diesel offer mobile Clean Truck Check testing?

Yes. RoadWrench Diesel 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 RoadWrench Diesel test a 2012 or older diesel truck?

RoadWrench Diesel does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Inland Empire Clean Truck Check](https://ctcfinder.com/tester/inland-empire-clean-truck-check-moreno-valley/) (about 1 mile). Trucks from 2013 on get an OBD scan instead.

### How much does RoadWrench Diesel charge for a Clean Truck Check?

RoadWrench Diesel has not published prices with us; call (951) 501-3603 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 RoadWrench Diesel a CARB-credentialed tester?

RoadWrench Diesel appears on CARB's public Clean Truck Check tester list with 2 credentialed testers, 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

- **[Inland Empire Clean Truck Check](https://ctcfinder.com/tester/inland-empire-clean-truck-check-moreno-valley/)** — 24125 Groven Ln, Moreno Valley, CA 92557 — (310) 948-5481 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[On-Site Truck Compliance](https://ctcfinder.com/tester/on-site-truck-compliance-moreno-valley/)** — 10180 Caribou Cir, Moreno Valley, CA 92557 — (840) 228-1456 — 1 mi. Services: mobile testing, OBD testing.
- **[Raphael Garcia Jr.](https://ctcfinder.com/tester/raphael-garcia-jr-moreno-valley/)** — Moreno Valley, CA 92557 — (909) 994-1490 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Raymond Barnes](https://ctcfinder.com/tester/raymond-barnes-moreno-valley/)** — Moreno Valley, CA 92557 — (951) 732-3526 — 1 mi. Services: mobile testing.
- **[Apx Road Service Inc Diesel Repair & Programming](https://ctcfinder.com/tester/apx-road-service-inc-diesel-repair-and-programming-morenovalley/)** — 11875 Pigeon Pass Rd steb13135, Morenovalley, CA 92557 — (951) 287-6804 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Aaron’s Diesel Pro](https://ctcfinder.com/tester/aarons-diesel-pro-riverside/)** — 200 W Big Springs Rd, Riverside, CA 92507 — (951) 201-6522 — 3 mi. Services: mobile testing, OBD testing, motorhome testing.