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Open today · 8:30 AM–1:00 PM 2295 Lemon Grove Ave Ste B, Lemon Grove CA 91945 STAR Station · BAR #300462 Get directions →
The Grove Smog CenterSTAR Certified · Test-Only (619) 461-0997

Mobile CARB Clean Truck Check · We come to you

Mobile Clean Truck Check in Lemon Grove.

We’re a mobile Clean Truck Check (Heavy-Duty I/M) inspection service — book online or call and we’ll come to your yard to test heavy-duty diesel, alternative-fuel and hybrid vehicles, with results filed to CARB. One truck or a whole fleet.

(619) 461-0997 Get directions

The program

What Clean Truck Check is.

Clean Truck Check is the California Air Resources Board’s Heavy-Duty Vehicle Inspection and Maintenance (HD I/M) program — the diesel equivalent of a car’s smog check, keeping heavy-duty emissions systems working properly.

For most affected vehicles it has three parts: report your vehicle and pay an annual compliance fee in CARB’s CTC-VIS system, and pass periodic emissions testing by a credentialed tester. We handle that testing — and we bring it to you.

Program deadlines and fees are set by CARB and can change. Report, pay, and check your vehicle’s due dates in your CTC-VIS account at cleantruckcheck.arb.ca.gov.

We come to your location.

Skip the trip — our mobile inspection service tests your trucks on-site, on your schedule. Book online or call for one truck or an entire fleet.

Book mobile testing

What we test

The Clean Truck Check inspection.

Which tests your vehicle needs depends on its year and whether it has on-board diagnostics.

OBD testing

For most 2013-and-newer vehicles, we connect to the on-board diagnostics, capture the emissions data snapshot, and upload it to CARB in real time.

Newer / OBD-equipped

Smoke-opacity testing

For older vehicles without OBD, we run a SAE J1667 smoke-opacity test to confirm particulate emissions are within legal limits.

Pre-2013 / non-OBD

Visual inspection

Non-OBD vehicles also get a visual check for tampering, missing or disconnected emissions components, and visible smoke or leaks.

With opacity test

Roadside monitoring

CARB screens vehicles on the road with remote sensors and plate readers. If yours is flagged, you’ll get a Notice to Submit to Testing — call us and we’ll get you compliant.

If you’re flagged (NST)

Who must comply

Does your vehicle need it?

Clean Truck Check applies to nearly all non-gasoline vehicles over 14,000 lbs GVWR operating on California roads — even if they’re registered in another state.

Typically included

  • Diesel, alternative-fuel and hybrid vehicles over 14,000 lbs
  • Commercial and personal trucks, box trucks and tractors
  • Buses, motorcoaches, shuttles and school buses
  • Motorhomes over 14,000 lbs and many government vehicles
  • Out-of-state trucks that operate in California

How often

Testing schedule.

VehicleHow it’s testedHow often
2013 & newer (OBD)OBD data snapshotPeriodically — twice a year now, rising toward four times a year by 2027
Pre-2013 (non-OBD)Smoke opacity + visualPeriodically per your CARB schedule
Flagged on the roadCompliance testWithin the deadline on your Notice to Submit to Testing

You can test up to 90 days before your compliance deadline — leave time in case repairs are needed. Confirm your dates in CTC-VIS.

Getting compliant

How Clean Truck Check works, step by step.

  1. Register in CTC-VISCreate your account at cleantruckcheck.arb.ca.gov and add your vehicle and owner details.
  2. Pay your annual compliance feePay the CARB fee for each vehicle by its due date to stay compliant.
  3. Book us — we come to youSchedule mobile testing up to 90 days before your deadline. We perform the right test for your vehicle — OBD, or opacity plus visual.
  4. We file your result to CARBPassing results are submitted electronically, so your compliance is on record.
  5. If it fails, repair & retestWe’ll explain what failed. Once repairs are made, we’ll retest before your deadline.

What you get

  • Mobile Clean Truck Check — we come to you
  • OBD and non-OBD (opacity + visual) testing
  • Results filed to CARB electronically
  • Single trucks and full fleets
  • Flexible times, on your schedule

Why compliance matters

  • Avoid DMV registration holds and CARB enforcement
  • Keep trucks road-legal and ports/terminals accessible
  • Respond to a Notice to Submit to Testing on time
  • Cleaner air and better fuel efficiency

Clean Truck Check FAQ

Good to know

Do you really come to us?

Yes — we’re a mobile Clean Truck Check inspection service. Book online or call and we’ll test your trucks at your location.

Which vehicles need Clean Truck Check?

Almost all non-gasoline vehicles over 14,000 lbs GVWR operating on California roads — including out-of-state trucks, buses, motorhomes and many government vehicles.

How often do I have to test?

Currently about twice a year, increasing toward four times a year by 2027. Your exact schedule is in your CTC-VIS account.

What’s the difference between OBD and opacity testing?

Newer vehicles (generally 2013 and up) get an OBD test. Older non-OBD vehicles get a smoke-opacity test plus a visual inspection.

Do I need to register and pay a fee?

Yes — Clean Truck Check requires a CTC-VIS account and an annual compliance fee per vehicle, separate from the test itself.

I got a Notice to Submit to Testing (NST). What now?

Call us promptly — an NST comes with a deadline. We’ll test the vehicle and file the result so you can clear the notice.

Can you test my whole fleet?

Yes — single trucks or full fleets, on your schedule, at your yard. Call to arrange it.

What if my vehicle fails?

We’ll explain what failed. After repairs, we’ll retest before your compliance deadline.

$39.75 smog in Lemon Grove. Open 7 days.

2295 LEMON GROVE AVE STE B · STAR STATION · BAR #300462

(619) 461-0997
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