---
title: "Jaswinder Singh — Clean Truck Check, Hayward, CA"
description: "Jaswinder Singh in Hayward, 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/jaswinder-singh-hayward/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Jaswinder Singh

Clean Truck Check tester in Hayward, CA (Alameda 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 | Hayward, CA 94544 |
| County | Alameda County |
| Phone | (510) 579-7294 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Jaswinder Singh 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 JR Trucking Services in Hayward, about 1 mile away. [See listing](https://ctcfinder.com/tester/jr-trucking-services-hayward/).

## Clean Truck Check testers in Alameda County

Jaswinder Singh is one of 85 testing businesses in Alameda County on CARB's public tester list. 79 of them offer mobile testing and 37 do smoke opacity tests. In Hayward itself there are 18 listed businesses, 17 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 Jaswinder Singh offer mobile Clean Truck Check testing?

Yes. Jaswinder Singh 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 Jaswinder Singh test a 2012 or older diesel truck?

Jaswinder Singh does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [JR Trucking Services](https://ctcfinder.com/tester/jr-trucking-services-hayward/) (about 1 mile). Trucks from 2013 on get an OBD scan instead.

### How much does Jaswinder Singh charge for a Clean Truck Check?

Jaswinder Singh has not published prices with us; call (510) 579-7294 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 Jaswinder Singh a CARB-credentialed tester?

Jaswinder Singh 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

- **[JR Trucking Services](https://ctcfinder.com/tester/jr-trucking-services-hayward/)** — 479 Custer Rd, Hayward, CA 94544 — (510) 589-2917 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing.
- **[K1 Smog](https://ctcfinder.com/tester/k1-smog-hayward/)** — 24087 Mission Blvd, Hayward, CA 94544 — (510) 582-2500 — 1 mi. Services: OBD testing, motorhome testing.
- **[Many Truck Repair](https://ctcfinder.com/tester/many-truck-repair-hayward/)** — 28425 E 11th St, Hayward, CA 94544 — (510) 925-7559 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Mobile Golden State Emissions Hayward](https://ctcfinder.com/tester/mobile-golden-state-emissions-hayward-hayward/)** — 50 Austin Ave., Hayward, CA 94544 — (925) 818-1831 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Norcal Fleet Service](https://ctcfinder.com/tester/norcal-fleet-service-hayward/)** — 29303 Pacific St, Hayward, CA 94544 — (415) 272-7877 — 1 mi. Services: mobile testing, OBD testing.
- **[R S Transport](https://ctcfinder.com/tester/r-s-transport-hayward/)** — 28425 East 11th street, Hayward, CA 94544 — (510) 760-1487 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.