CARB Compliance in Ontario, CA.Stay Road Legal. Avoid Fines.
Are you struggling to keep your diesel fleet CARB-compliant? Failing to meet California’s strict emission standards can cost you thousands in fines and downtime. At Rapid Diesel Repair, we specialize in CARB compliance services, keeping your vehicles road legal and running efficiently.
Real challenges. Real solutions.
California emissions rules are strict. We help you stay ahead.
The California Air Resources Board (CARB) is dedicated to reducing air pollution and protecting public health by setting and enforcing emissions standards for vehicles and equipment. Compliance is mandatory for diesel powered vehicles operating in California.
Costly Fines
Missed tests or non compliant trucks can bring citations and penalties.
DMV Registration Holds
Non compliant vehicles may be denied registration by the DMV.
Failed Emissions Tests
A faulty EGR, DPF or SCR system can fail a truck on test day.
Unplanned Downtime
A truck parked for compliance issues is a truck not earning money.
Our CARB compliance services.
At Rapid Diesel Repair, we offer a comprehensive range of services to make sure that your vehicles remain efficient and compliant with CARB regulations.
Emissions Testing
Using advanced diagnostic equipment, we conduct thorough emissions tests to confirm your vehicles meet CARB standards.
CALL RAPID DIESEL(909) 701 8755Talk with a diesel repair specialistEGR, DPF & SCR Repair
If a truck fails or throws emissions codes, we diagnose and repair the EGR, DPF, SCR and DOC systems so it can pass.
CALL RAPID DIESEL(909) 701 8755Talk with a diesel repair specialistDocumentation & Reporting
We assist with all necessary paperwork. This allows for timely and accurate reporting to CARB, keeping your vehicles compliant with all regulations.
CALL RAPID DIESEL(909) 701 8755Talk with a diesel repair specialistConsultation & Training
Our experts offer guidance on best practices for maintaining compliance and provide training for your team on CARB regulations.
CALL RAPID DIESEL(909) 701 8755Talk with a diesel repair specialistGet compliant in 3 steps.
A simple process to find out where your trucks stand and get them ready for test day.
Tell us about your trucks
Share your vehicles, engine years and any test deadlines or warning lights.
We test and diagnose
We check emissions systems and explain what needs attention before you spend a dollar.
Repair, document, drive
We complete repairs, help with paperwork and get your trucks back on the road.
Understanding CARB compliance
Key CARB regulations for diesel trucks.
Rules change often, so we always recommend confirming your exact requirements with CARB. Here is a plain overview of the programs that affect most trucks we see.
Truck and Bus Regulation
As of January 1, 2023, all diesel-powered vehicles with a gross vehicle weight rating over 14,000 lbs must have a 2010 or newer engine and emission system. Non-compliant vehicles may face registration denial by the Department of Motor Vehicles (DMV).
Clean Truck Check (HD I/M)
The Heavy-Duty Inspection and Maintenance (HD I/M) Program requires regular emissions testing and maintenance to ensure vehicles’ emissions control systems are functioning correctly. It applies to most diesel and alternative fuel vehicles over 14,000 lbs GVWR operating in California, including out of state trucks.
Periodic Testing
Periodic testing started in 2025, generally twice a year for most heavy duty vehicles, with CARB planning to move many vehicles to four tests a year starting in 2027. Motorhomes and certain agricultural vehicles have different schedules.
How Trucks Are Tested
Most 2013 and newer engines are tested by reading onboard diagnostic (OBD) data. Older trucks without compatible OBD typically get a smoke opacity test and a visual inspection of emissions parts. Testing is done by a CARB credentialed tester and results are submitted to CARB.
Why choose Rapid Diesel Repair?
Expertise
Our mechanics are highly trained in CARB regulations and diesel engine technology, ensuring accurate assessments and effective solutions.
State of the Art Equipment
We utilize the latest diagnostic tools and equipment to provide precise emissions testing and repairs.
Customer Centric Approach
We prioritize your needs, offering flexible scheduling and personalized services to minimize downtime and keep your operations running smoothly.
Frequently Asked Questions
CARB Compliance FAQs
Straight answers about CARB rules, testing and repairs for diesel trucks and fleets.
We proudly offer CARB compliance services in Ontario, CA, as well as in San Bernardino, Riverside, Los Angeles, and throughout the Southern California Inland Empire.
Non-compliance can result in fines, registration denial by the DMV, and potential operational shutdowns. Ensuring compliance is essential to avoid these penalties and contribute to environmental protection.
Inspection frequency depends on specific regulations applicable to your vehicles. Generally, regular emissions testing and maintenance are required to maintain compliance. Under the Clean Truck Check program, most heavy duty vehicles are tested twice a year, and CARB plans to increase that for many vehicles starting in 2027. It’s best to consult with a CARB compliance expert for tailored guidance.
Compliance requires keeping the EGR, DPF, SCR, and DOC systems in top condition. This involves regular maintenance, using quality DEF, performing timely regeneration, and keeping accurate records to ensure trucks meet California’s strict emissions standards.
Clean Truck Check is CARB’s name for the Heavy Duty Inspection and Maintenance (HD I/M) program. It requires most heavy duty vehicles over 14,000 lbs GVWR that operate in California to be reported to CARB, pay an annual compliance fee, and pass periodic emissions tests.
Yes. The program covers most heavy duty vehicles operating in California, including trucks registered in other states. Check CARB’s website for your exact vehicle type.
Call or text us. We will read the codes, test the emissions system, and find the cause, whether it is a clogged DPF, a sticking EGR valve, a failed NOx sensor or a DEF problem. After repairs, the truck can be retested.
Under the Truck and Bus Regulation, diesel vehicles over 14,000 lbs GVWR generally need a 2010 or newer model year engine to be registered. Some limited exemptions exist, so confirm your truck’s status with CARB.
Let the truck complete regenerations, avoid excessive idling, fix any engine issues that cause extra soot, use the correct low ash oil, and have the DPF cleaned on a regular schedule based on your duty cycle.
Yes. We can help you track testing dates, keep maintenance records organized, and schedule emissions repairs so your trucks stay compliant without surprise downtime.
It depends on the truck and what it needs. Call, text or use the form and we will explain your options before any work begins.
Contact us for CARB compliance today!
Don’t let non-compliance put you at risk.
Contact our team at Rapid Diesel Repair at 909-701-8755 today to schedule your CARB compliance services. A member of our team will be more than happy to answer any questions that you may have and book you in at a time that best suits you.