Mobile CARB Clean Truck Check in Sacramento & North Valley
Official CARB-Credentialed Mobile Testing for Semi Trucks, Fleets, Motorhomes, Buses & Heavy Equipment. WE COME DIRECTLY TO YOU in Sacramento and across Northern California!
CARB Credentialed Tester
Certified Clean Truck Check (CTC) Mobile Unit
Mandatory California Air Resources Board compliance for all heavy-duty vehicles over 14,000 lbs GVWR.
Heavy-Duty Vehicle Inspection Program (HDVIP)
What is Clean Truck Check (CTC) Compliance?
Clean Truck Check (CTC) is California's mandatory emissions inspection program enacted by the California Air Resources Board (CARB). It applies to nearly all non-gasoline commercial vehicles, diesel semi trucks, motorhomes, buses, and heavy equipment with a Gross Vehicle Weight Rating (GVWR) greater than 14,000 lbs operating on California highways.
Who Must Comply?
In-state & out-of-state diesel/alt-fuel commercial vehicles over 14,000 lbs GVWR driving in CA.
Testing Frequency
Required 2x per year (semiannually) for all 2013+ OBD-equipped heavy-duty diesel trucks operating in California.
Official CARB Clean Truck Check Services
We eliminate downtime by bringing state-of-the-art mobile testing directly to your terminal, truck stop, job site, or driveway across Sacramento and Northern California.
OBD Clean Truck Check (On-Board Diagnostics)
For 2013 and newer diesel engines. Our credentialed technicians connect approved CARB diagnostic hardware to read engine fault codes, monitor readiness monitors, verify VIN numbers, and transmit pass results directly to the CARB CTC database.
- Immediate CTC compliance submission
- Clear readiness monitor diagnostic check
- Electronic Certificate of Compliance issued
Consequences of CARB Non-Compliance
CARB enforcement teams actively monitor scales, inspection stations, and DMV databases. Ignoring Clean Truck Check testing deadlines puts your commercial operation at severe risk.
Massive Fines
CARB issues daily non-compliance penalties starting at $1,000 and reaching upwards of $10,000+ per vehicle per day for repeated non-compliance.
DMV Registration Holds
California DMV automatically blocks annual registration renewals for non-compliant vehicles until valid CTC testing certificates are received.
Shutdown & Red-Tags
Enforcement field officers can issue immediate "Do Not Operate" orders at scales and ports, parking your rig until testing is completed.
Audit Escrow & Legal Fees
Unresolved citations trigger full fleet audits by CARB and state attorneys, requiring costly administrative hearings.
Don't Risk DMV Holds or Costly Citations!
Get tested today in Sacramento, Stockton, Redding, Vallejo or anywhere in the North Valley.
More Ways We Help Your Fleet Stay Compliant
FREE Automated Reminders
Never worry about missing a semiannual CARB deadline again. Every truck we test is entered into our tracking system with complimentary SMS and email deadline alerts.
FREE CARB Account Setup
Confused by the state's Clean Truck Check database portal? We assist owner-operators and fleet managers in registering their entity and vehicles with CARB at zero extra charge.
DOT & Fleet Audit Support
In-depth consultation for federal DOT and state safety record-keeping, driver qualification files, and fleet maintenance documentation tailored to your company.
Serving Sacramento & Northern California
Equipped with heavy-duty OBD diagnostic scanners to test semi trucks, motorhomes, dump trucks, and commercial fleets wherever they are parked.
Have a Fleet of 5+ Heavy Duty Vehicles?
We offer volume fleet discounts across Sacramento, Stockton, Redding & North Valley.
Trusted by Drivers & Fleet Managers
See why Northern California trucking fleets rate NorCal Calibration 5 stars for speed, convenience, and compliance accuracy.
"NorCal Calibration dispatched a mobile tester directly to our West Sacramento yard at 6:30 AM before our rigs hit I-5. Scanned 12 semi trucks in one morning and uploaded everything directly to the CARB CTC portal. Best mobile service in Northern California!"
"We had a DMV registration hold on 3 of our diesel dump trucks. NorCal Calibration came to Stockton same-day, performed the OBD emissions diagnostic scan, cleared our readiness issues, and got us fully compliant. Unbeatable speed and professionalism."
"Finding a mobile CARB credentialed tester willing to travel up to Redding without outrageous travel fees was tough until we called NorCal Calibration. Honest upfront pricing, zero hassle, and extremely knowledgeable about CARB deadlines."
"They dispatched a mobile OBD tester to our Solano County yard and scanned our 2016 and 2019 Peterbilts same-day. Readiness monitors cleared, results uploaded straight to the CARB portal, and they set us up with free automated testing reminders."
Ready to Clear Your CARB Clean Truck Check?
We are based in Sacramento and dispatch mobile testers directly to your location in Sacramento, Stockton, Redding, Vallejo, Vacaville, Fairfield, Modesto, and all North Valley communities.