Opperman and Son
Clean Truck Check tester in Healdsburg, CA (Sonoma County).
- OBD test
Opperman and Son appears on CARB's public list of credentialed Clean Truck Check testers. It lists OBD testing.
- Location
- Healdsburg, CA 95448
- County
- Sonoma County
- Phone
- (707) 304-0375
- Mobile testing
- No (test at the shop)
- OBD testing
- Yes
- Smoke opacity (non-OBD)
- No
- Motorhomes
- No
- Credentialed testers
- 1
- Last verified
Call (707) 304-0375 Open in Google Maps
The street address is not published for this listing (mobile or home-based tester). Call to arrange the test.
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. Typical published prices for an OBD test are $50–$135 per vehicle (see cost guide).
Which trucks Opperman and Son can test
The test CARB requires depends on the engine's fuel and model year. Based on the services Opperman and Son 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 | 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 David Bertoli in Santa Rosa, about 13 miles away. See listing.
If you need a tester at your yard, the nearest listed tester that offers mobile testing is Clifford Cole in Santa Rosa, about 11 miles away. See listing.
Clean Truck Check testers in Sonoma County
Opperman and Son is one of 28 testing businesses in Sonoma County on CARB's public tester list. 19 of them offer mobile testing and 14 do smoke opacity tests. All testers in Sonoma 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 Opperman and Son 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 Opperman and Son 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 Clifford Cole (about 11 miles).
Can Opperman and Son test a 2012 or older diesel truck?
Opperman and Son does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is David Bertoli (about 13 miles). Trucks from 2013 on get an OBD scan instead.
How much does Opperman and Son charge for a Clean Truck Check?
Opperman and Son has not published prices with us; call (707) 304-0375 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 Opperman and Son a CARB-credentialed tester?
Opperman and Son 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 Healdsburg
-
Opperman & Sons, Inc.
- OBD test
-
Clifford Cole
- Mobile testing
- OBD test
- Motorhomes
-
RKB Leasing LLC
- OBD test
- Motorhomes
-
Angelica Onate
- Mobile testing
-
Breen
- Mobile testing
- Motorhomes
-
D Bar Diesel Truck Repair Corp
- Mobile testing
- OBD test
- Motorhomes
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.