WTC

Clean Truck Check tester in West Sacramento, CA (Yolo County).

WTC appears on CARB's public list of credentialed Clean Truck Check testers. It lists OBD testing.

Location
1925 Enterprise Blvd, West Sacramento, CA 95691
County
Yolo County
Phone
(916) 512-9191
Mobile testing
No (test at the shop)
OBD testing
Yes
Smoke opacity (non-OBD)
No
Motorhomes
No
Credentialed testers
1
Last verified

Call (916) 512-9191 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. Typical published prices for an OBD test are $50–$135 per vehicle (see cost guide).

Which trucks WTC can test

The test CARB requires depends on the engine's fuel and model year. Based on the services WTC lists on CARB's tester list:

Your vehicleTest requiredThis tester
Diesel, model year 2013 or newerOBD scanYes
Alternative fuel (natural gas, propane), 2018 or newerOBD scanYes
Diesel, model year 2012 or older (no OBD)Smoke opacity test (SAE J1667) plus visual inspectionNot listed
California-registered motorhomeSame test as above by engine year, once a yearNot listed

For a 2012 or older diesel, the nearest listed tester with smoke opacity testing is Quickpass carb check in Sacramento, about 1 mile away. See listing.

If you need a tester at your yard, the nearest listed tester that offers mobile testing is Quickpass carb check in Sacramento, about 1 mile away. See listing.

Clean Truck Check testers in Yolo County

WTC is one of 42 testing businesses in Yolo County on CARB's public tester list. 36 of them offer mobile testing and 23 do smoke opacity tests. In West Sacramento itself there are 21 listed businesses, 16 of them mobile. All testers in Yolo 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 WTC 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 WTC 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 Quickpass carb check (about 1 mile).

Can WTC test a 2012 or older diesel truck?

WTC does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is Quickpass carb check (about 1 mile). Trucks from 2013 on get an OBD scan instead.

How much does WTC charge for a Clean Truck Check?

WTC has not published prices with us; call (916) 512-9191 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 WTC a CARB-credentialed tester?

WTC 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 West Sacramento

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.

Call (916) 512-9191