CARB Inspection

The direct answer: California's Clean Truck Check applies to most heavy-duty diesel vehicles operating in the state, including many based elsewhere. Applicability, deadlines and fees are set by CARB and change over time, so confirm your obligation there rather than from any shop's summary, ours included. We perform the testing in-house.

CARB Inspection: A Standard for Environmental Responsibility, Compliance, and Optimal Performance

At Pro Truck Services, we understand the crucial role that the CARB Inspection (Clean Truck Check) plays in maintaining the health and performance of your fleet. This service not only embraces environmental responsibility but is also a fundamental requirement for keeping your trucks compliant with California’s emission standards. Proactive adherence to these standards is not just about avoiding penalties; it’s about ensuring your vehicles run efficiently, perform optimally and have a longer lifespan. Remember, a clean truck is not just environmentally friendly; it’s also a symbol of excellence in maintenance, demonstrating respect for your clients and the communities you serve. Don’t compromise on the care of your fleet; choose Pro Truck Services for your CARB Inspection (Clean Truck Check) needs.

Clean Truck Check - CARB Inspection Services

At Pro Truck Services, we understand the importance of maintaining an eco-friendly environment, and it begins with ensuring that your truck meets the necessary emission standards set by the California Air Resources Board (CARB). Therefore, we offer comprehensive Clean Truck Check services to ensure compliance with CARB regulations, keeping our air clean while minimizing your truck’s downtime.

Our skilled, ASE-certified technicians use the most up-to-date equipment to perform detailed inspections and necessary repairs, enhancing your truck’s performance and reducing harmful emissions. From pinpointing potential issues to carrying out repairs, we aim for thorough, efficient service that will help your truck’s efficiency while ensuring that it remains CARB compliant. Rely on Pro Truck Services for your Clean Truck Check needs, and help us make a difference one truck at a time.

What the Clean Truck Check actually tests

The test is a check on the truck’s emissions controls, not a cleaning or a tune-up. What happens depends on the engine:

1. Who is covered: diesel and alternative-fuel vehicles over 14,000 lbs GVWR operating in California — including out-of-state and public-agency vehicles.
2. OBD-equipped trucks (2013 and newer diesel engines, 2018 and newer alternative-fuel engines): an OBD scan of the parameters CARB requires, submitted through a CARB-verified device. An active emissions-related check-engine fault fails it.
3. Older, non-OBD trucks: a smoke-opacity test to SAE J1667 plus a visual inspection of the emissions control equipment.
4. Timing: a passing test can be submitted up to 90 days before the vehicle’s compliance deadline, which leaves room to repair a failure before the date.
5. Why it pays to test early: the faults that fail a test — a DPF, DEF/SCR or check-engine fault — are usually the same ones already costing fuel or threatening a derate, so finding them with time to spare is cheaper than finding them at the deadline.

What is CARB Inspection (Clean Truck Check) service at Pro Truck Services?

It is the periodic emissions compliance test CARB’s Clean Truck Check program requires of heavy-duty vehicles in California: an OBD data scan for 2013-and-newer diesel engines, or a smoke-opacity test with a visual inspection of the emissions equipment for older engines. If the truck fails — usually on an active emissions fault — we diagnose and repair the cause, including EGR and DPF and SCR/DEF work, and the truck is retested.

What are the benefits of getting a CARB Inspection (Clean Truck Check) at Pro Truck Services?

There are several key benefits to getting a CARB Inspection at Pro Truck Services:

1. Compliance: Passing a CARB inspection ensures your truck is compliant with California’s strict emissions regulations, helping you avoid costly fines and penalties.
2. Improved Air Quality: By ensuring your truck meets emissions standards, you are doing your part to reduce air pollution and improve air quality in your community.
3. Expertise: The ASE-certified technicians at Pro Truck Services have the knowledge and experience to perform a thorough CARB inspection and identify any issues that need to be addressed. 
4. One shop: the emissions and aftertreatment repairs a failed test points to are done in the same bays, so a failure doesn’t mean a second appointment somewhere else.
5. Peace of Mind: With a passed CARB inspection, you can have confidence your truck is running cleanly and efficiently.

How long does a CARB Inspection (Clean Truck Check) take at Pro Truck Services?

The duration of a CARB Inspection can vary depending on the specific make and model of your truck, as well as its current condition. How long it takes depends on the vehicle and what the test finds; we give you a realistic window when you book, and a truck that fails gets the repair quoted before anything is done. The ASE-certified technicians at Pro Truck Services will work efficiently to complete the inspection promptly, while still being thorough to ensure your truck meets all necessary requirements. If any issues are identified that require repairs or maintenance, additional time may be needed. The service advisor will provide you with an estimated time of completion prior to starting any work.

What types of trucks can Pro Truck Services perform a CARB Inspection (Clean Truck Check) on?

Commercial diesel trucks: Class 8 tractors, box and straight trucks, medium-duty Class 5–7 diesels and dump trucks. Trailers have no engine and are not emissions-tested under Clean Truck Check; refrigeration units on reefer trailers fall under a separate CARB program. The shop is built around commercial trucks, not pickups — a personal diesel pickup is better served by a light-duty shop, and we will say so on the phone. If you are unsure whether your vehicle is subject to CARB’s heavy-duty program, call with the year and GVWR and we will tell you straight.

How often should I get a CARB Inspection (Clean Truck Check) at Pro Truck Services?

Under CARB’s Clean Truck Check program, most heavy-duty diesel vehicles operating in California are on a periodic emissions-testing schedule: twice a year through 2026, with testing scheduled to increase to four times a year for OBD-equipped vehicles from October 2027. A test must be submitted within the 90 days before the vehicle’s compliance deadline to count for it. Older vehicles with 2012-and-earlier engines stay on a twice-yearly smoke-opacity test, and a 2026 bill (SB 1064) proposes less frequent testing for low-use vehicles — so confirm your own vehicle’s schedule rather than relying on the general rule. Each vehicle’s deadlines, and any exemptions, are set per vehicle in CARB’s Clean Truck Check system — check yours there or call us with the VIN and we will work from the same date. Program details and fees change; this reflects the rules as we last verified them, and the fleet compliance page explains how to keep a whole yard on the calendar.