Frank4CARB - Same-Day Mobile Service
Clean Truck Check tester in Paramount, CA (Los Angeles County).
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
Frank4CARB - Same-Day Mobile Service appears on CARB's public list of credentialed Clean Truck Check testers. It lists mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. Mobile testing means the tester can come to your yard or job site.
- Location
- 15731 Paramount Blvd STE B, Paramount, CA 90723
- County
- Los Angeles County
- Phone
- (949) 632-6277
- Mobile testing
- Yes — comes to your yard
- OBD testing
- Yes
- Smoke opacity (non-OBD)
- Yes
- Motorhomes
- Yes
- Credentialed testers
- 1
- Last verified
Call (949) 632-6277 Open in Google Maps
Before you call
- Have your VIN, odometer reading and plate number ready.
- Your vehicle must be registered in CTC-VIS and the annual compliance fee paid; the tester submits the result to CARB.
- Ask for the price per vehicle and any mobile trip fee. Typical published prices for an OBD test are $50–$135 per vehicle (see cost guide).
Which trucks Frank4CARB - Same-Day Mobile Service can test
The test CARB requires depends on the engine's fuel and model year. Based on the services Frank4CARB - Same-Day Mobile Service lists on CARB's tester list:
| 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 Los Angeles County
Frank4CARB - Same-Day Mobile Service is one of 516 testing businesses in Los Angeles County on CARB's public tester list. 465 of them offer mobile testing and 190 do smoke opacity tests. In Paramount itself there are 3 listed businesses, 3 of them mobile. All testers in Los Angeles County.
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. You can test up to 90 days before a deadline. Get a free email reminder before each one.
How to check a tester's credential
CARB publishes its Clean Truck Check tester list, where Frank4CARB - Same-Day Mobile Service appears as of November 1, 2026. Listing there is optional, so a missing name does not always mean a tester is not credentialed. After the test, check that the passing result shows for your vehicle in CTC-VIS; that is what counts for compliance.
Frequently asked questions
Does Frank4CARB - Same-Day Mobile Service offer mobile Clean Truck Check testing?
Yes. Frank4CARB - Same-Day Mobile Service 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 Frank4CARB - Same-Day Mobile Service test a 2012 or older diesel truck?
Yes. Frank4CARB - Same-Day Mobile 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.
How much does Frank4CARB - Same-Day Mobile Service charge for a Clean Truck Check?
Frank4CARB - Same-Day Mobile Service has not published prices with us; call (949) 632-6277 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.
Is Frank4CARB - Same-Day Mobile Service a CARB-credentialed tester?
Frank4CARB - Same-Day Mobile 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 near Paramount
-
Mauricio Arevalo
- Mobile testing
- OBD test
- Motorhomes
-
Wolfh Diesel Electric Tech
- Mobile testing
- OBD test
- Motorhomes
-
Elevate Testing Services
- Mobile testing
- OBD test
-
Busd
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
-
Elizabeth Hanohano
- Mobile testing
- OBD test
- Motorhomes
-
Jacob Ochoa
- Mobile testing
- OBD test
Source: CARB's public Clean Truck Check tester list, last checked . Listing on CARB's list is optional for testers, so some credentialed testers are not shown. Services, hours and prices change; please confirm with the tester before you go. Something wrong? Send a correction.