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# Diesel Emissions Service

Quality Drives Us

## Sitemaps

- [XML Sitemap](https://dieselemissionsservice.com/sitemap.xml): Contains all public & indexable URLs for this website.

## Posts

- [Yes, Your Motorhome Needs a CARB Test: How to Pass](https://dieselemissionsservice.com/2026/06/25/ca-diesel-rv-emissions-testing-guide/) - Do you need CA diesel RV emissions testing? Yes, if you are over 14,000 lbs. Skip the repair shop if you want—our mobile service comes directly to you.
- [A 2026 Guide: That 'CARB Exemption' for Your RV or Pickup? Here’s What’s Changed](https://dieselemissionsservice.com/2025/11/05/2026-guide-that-carb-exemption-for-your-rv-or-pickup/) - Let's clear the air. That 'CARB Exemption' no longer applies. The regulations have evolved. For most personal-use RV & pickup owners, the news is fairly good
- [FAQ - Clean Truck Check - HD I/M Program](https://dieselemissionsservice.com/2024/08/29/faq-clean-truck-check-hdim/) - CARB is rolling out strict emissions testing & enforcement for most diesel vehicles registered/operating in CA. Learn more in our Clean Truck Check FAQ.
- [CARB Exemptions for some Diesel Pickups & Motorhomes](https://dieselemissionsservice.com/2021/11/12/diesel-pickups-motorhomes-and-carb/) - Important information to help navigate some complex & confusing CARB exemptions for certain late-model diesel pickups and motorhomes. DES is here to help.
- [Everything You Need to Know About Aftertreatment Maintenance](https://dieselemissionsservice.com/2021/04/28/everything-you-need-to-know-about-aftertreatment-maintenance/) - Learn about two factors that are driving many problems with aftertreatment maintenance we see today. Brought to you by DES, your diesel emissions specialists.
- [The Key to Maintaining the EGR on a Diesel Engine](https://dieselemissionsservice.com/2021/06/02/the-key-to-maintaining-the-egr-on-a-diesel-engine/) - Learn about Maintaining the EGR as part of keeping your truck's diesel emissions system healthy & efficient
- [What You Need to Know About the Diesel Oxidation Catalyst on a Diesel Engine](https://dieselemissionsservice.com/2021/06/25/about-the-diesel-oxidation-catalyst-on-a-diesel-engine-2/) - Learn about the Diesel Oxidation Catalyst (DOC) & how it works as part of the aftertreatment systems on today's cleaner-running diesel trucks.
- [Aftertreatment Systems 101](https://dieselemissionsservice.com/2018/12/22/aftertreatment-systems-101/) - Aftertreatment Systems 101 Get started learning some basics about diesel exhaust aftertreatment emissions systems, dpfs, preventive maintenance, etc.
- [How to Clean a Diesel Particulate Filter?](https://dieselemissionsservice.com/2021/09/08/how-to-clean-a-diesel-particulate-filter/) - Learn all about DPF Cleaning. How often cleanings should be done & why, how much DFP cleaning can cost, DPF cleaning methods, etc.
- [Clean Truck Check Reporting Deadline Extended by CARB](https://dieselemissionsservice.com/2024/01/04/clean-truck-check-deadline-extended-by-carb/) - CARB is extending the reporting deadline to Jan. 31, 2024, for truck/fleet owners operating in California to get registered in the Clean Truck Check database.
- [DPF Cleaning: How Often?](https://dieselemissionsservice.com/2024/06/28/dpf-cleaning-how-often/) - You might be wondering how often to clean your DPF. We cover DPF cleaning intervals, factors, & methods. And answer the question “Can I just clean it myself?”
- [Oregon's Diesel Retrofit Compliance Program Deadlines Approaching](https://dieselemissionsservice.com/2025/04/03/oregons-diesel-retrofit-compliance-program-deadlines/) - In the Portland, OR area & own an older diesel truck? DES can help with your Diesel Retrofit Compliance Program questions. Get the latest information here.
- [What you need to know about the Clean Air Construction Program](https://dieselemissionsservice.com/2023/01/03/clean_air_construction_portland_voucher/) - Clean Air Construction is designed to lower diesel emissions from construction sites in the Portland Metro Area. Retrofit assessment vouchers are now available.
- [Oregon’s One-Time Fleet Reporting Requirement](https://dieselemissionsservice.com/2022/05/06/oregon_one_time_fleet_reporting/) - If you have a fleet in Oregon, learn about Oregon’s One-Time Fleet Reporting Requirement! The deadline is June 30, 2022. DES is your retrofit headquarters.
- [Reducing Idling Reduces Costs](https://dieselemissionsservice.com/2021/12/17/reducing-idling-reduces-costs/) - Learn how Reducing Idling can lower diesel emissions & fleet maintenance costs from real-world experience. We also cover specific programs for reducing idling.
- [DES partners with Red Fox Resources to recycle DPFs](https://dieselemissionsservice.com/2019/09/21/des_recycle_dpfs_redfox/) - Learn how DES partners with Red Fox Resources to recycle DPFs and even generates revenue from what seems like useless junk.
- [Cleaning DPFs vs Reman - Steve Hoke of DES on The HD Parts Report Podcast](https://dieselemissionsservice.com/2019/11/15/cleaning-dpfs-vs-reman-podcast/) - Jamie Irvine interviews Steve Hoke, President of Diesel Emissions Service. They discuss DPF cleaning, diesel emissions, Filtertherm, & cleaning DPFs vs REMAN.
- [DEF Doser issue causes truck to "de-rate"](https://dieselemissionsservice.com/2020/01/02/def-doser-issue/) - Learn about a DEF Doser issue our diesel technicians came across, how dosers work, & how to help prevent a "de-rate" condition from happening to your truck.
- [How to Contain Diesel Emissions Costs?](https://dieselemissionsservice.com/2021/10/19/contain-diesel-emissions-costs/) - Learn how to contain diesel emissions costs based on real-world data & experience from fleets. Get info on DPF cleaning intervals, upstream issues, etc.
- [Breaking Down Oregon’s Diesel Retrofit Compliance Program](https://dieselemissionsservice.com/2022/05/13/oregons-diesel-retrofit-compliance-program/) - If you have a fleet of diesel vehicles in Oregon, you need to know about Oregon’s Diesel Retrofit Compliance Program! Get help with the retrofit process from DES.
- [What You Need to Know About Oregon’s Diesel Emissions Mitigation Grant Program](https://dieselemissionsservice.com/2023/03/20/oregons-diesel-emissions-mitigation-grant-program/) - Learn all about Oregon’s Diesel Emissions Mitigation Grant Programs & how DES can help you navigate the application & retrofit process.

## Pages

- [Home](https://dieselemissionsservice.com/) - DES is your West Coast headquarters for diesel emissions such as DPF Cleaning, Clean Truck Checks, diagnostics, aftertreatment parts, Retrofits, EGR cleaning...
- [Clean Truck Check Sacramento](https://dieselemissionsservice.com/clean-truck-check-sacramento/) - Clear your DMV hold today. Certified Clean Truck Check Sacramento. Shop testing just $115, or we come to you. Class 6-8 & RVs. Instant CARB upload. Call now.
- [News](https://dieselemissionsservice.com/news/) - Diesel aftertreatment articles on topics such as DPF cleaning, retrofits, Oregon grants, parts, emissions service, aftertreatment systems, CARB, diagnostics...
- [Services](https://dieselemissionsservice.com/services/) - DES offers professional diesel emissions services: DPF Cleaning, CA Clean Truck Check - HD I/M testing, retrofits, EGR cleaning & aftertreatment parts.
- [Off-Road](https://dieselemissionsservice.com/our-work/off-road/) - Off-Road Retrofits & DPF Cleaning for med/heavy-duty diesel trucks & vehicles. Off-road vehicles need regular D cleanings & in some cases, retrofits to comply with CARB/EPA requirements.
- [Locations](https://dieselemissionsservice.com/locations/) - We specialize in professional DPF cleaning, retrofits, aftertreatment parts, & Clean Truck Checks. In Redding, CA, Sacramento, CA, Portland, OR, & Vancouver, BC
- [Vancouver](https://dieselemissionsservice.com/locations/vancouver/) - DES is your best source for high-quality diesel aftertreatment parts in Vancouver, BC. We are located at 19100 Airport Way, Unit 112, Pitt Meadows, BC V3Y 0E2
- [DPF Cleaning Portland | Next-Day Turnaround | $300 Flat Rate](https://dieselemissionsservice.com/dpf-cleaning-portland/) - Expert DPF, DOC, & SCR cleaning in Portland since 2015. Free pickup within 5 miles. Detailed FILTERtrak reports & 10% new customer discount. DPF Cleaning Portland HQ
- [Clean Truck Check Portland, OR](https://dieselemissionsservice.com/clean-truck-check-portland/) - Heading to California? Get certified in Portland. Mobile or Shop testing for Class 6-8 diesels & RVs. Clean Truck Check Portland. Same-day CARB upload.
- [Clean Truck Check Redding](https://dieselemissionsservice.com/clean-truck-check-redding/) - Certified CARB Clean Truck Check testing in Redding, CA. Clear DMV holds fast. We test 2013+ (OBD) & older trucks (Smoke). Mobile or Shop. Clean Truck Check Redding
- [Diesel Repair Sacramento | PMs, DPF & Diagnostics | DES](https://dieselemissionsservice.com/diesel-repair-sacramento/) - Sacramento's trusted diesel shop. Fast PMs, DOT Inspections, & expert diagnostics for Class 6-8 & RVs. In & Out service. 916-473-7393 - Diesel Repair Sacramento
- [Portland](https://dieselemissionsservice.com/locations/portland/) - DPF Cleaning in Portland, OR. DES Portland also has a wide selection of aftertreatment parts, installs ODEQ-certified retrofits, & more for the Pacific Northwest.
- [Sacramento](https://dieselemissionsservice.com/locations/sacramento/) - DES is your source for DPF Cleaning in Sacramento, CA We also do diesel repair, aftertreatment parts, retrofits, EGR cleaning & more for the Central Valley area.
- [Contact Us](https://dieselemissionsservice.com/contact/) - Contact DES today! Get the contact information for each of the DES locations for all your diesel emissions service needs, including DPF cleaning, CTC, parts, more.
- [Redding](https://dieselemissionsservice.com/locations/redding/) - DES is your local expert for DPF Cleaning in Redding, CA. We offer aftertreatment parts, Clean Truck Checks, custom diesel retrofits, EGR service, & more.
- [Retrofit Projects](https://dieselemissionsservice.com/retrofit-projects/) - Learn about new retrofit initiatives in Oregon, etc. DES can help businesses & fleets like yours save money on compliance with CARB & EPA requirements. We're your retrofit experts.
- [About](https://dieselemissionsservice.com/about/) - Diesel Emissions Service is a family-owned company that offers aftertreatment parts, DPF cleaning, retrofits, & service for medium & heavy-duty diesel trucks.
- [Retrofits for Older Diesel Engines in Oregon](https://dieselemissionsservice.com/retrofit-projects/or-retrofit-compliance/) - Learn about new regulations affecting older diesel vehicles & retrofits in Oregon. DES can help you navigate these challenges. DES is an approved retrofit installer in OR
- [Oregon Diesel Emissions Mitigation Fund](https://dieselemissionsservice.com/retrofit-projects/oregon-grants/) - Get Diesel Emissions Mitigation Grant funding from Oregon DEQ for older diesel vehicles. DES can help you with Oregon Retrofit Grants & retrofit installations.
- [Clean Air Construction (CAC) Program](https://dieselemissionsservice.com/retrofit-projects/clean_air_construction/) - The Clean Air Construction (CAC) Program is designed to lower emissions on construction sites in the Portland area by reducing idling & retrofitting older vehicles. DES is your retrofit headquarters
- [CARB & Emissions Compliance](https://dieselemissionsservice.com/retrofit-projects/carb/) - DES experts provide you with CARB / ARB emissions compliance up-to-date information to help you navigate requirements for your diesel trucks.
- [survey thank you](https://dieselemissionsservice.com/survey-thank-you/) - Thank you. Diesel Emissions Service welcomes your feedback as a valued customer. (This page is a survey thank you.
- [Warranty](https://dieselemissionsservice.com/about/warranty/) - DES Warranty - Full terms and conditions for warranties on parts and labor, warranted against defects in workmanship and labor or materials, plus exchanges.
- [Testimonials](https://dieselemissionsservice.com/about/testimonials/) - Diesel Emissions Service customer testimonials and reviews of their experiences with our products and services. Contact us today to add yours to the list.
- [Jobs](https://dieselemissionsservice.com/about/jobs/) - DES jobs - join the DES team today! We offer competitive wages and benefits in an emerging market with advancement opportunites and in-house training.
- [DES Survey](https://dieselemissionsservice.com/survey/) - Diesel Emissions Service welcomes your feedback as a valued customer. Help us help you better! Take our DES survey for a chance to win a $250 gift card.
- [Municipal](https://dieselemissionsservice.com/our-work/municipal/) - Retrofits & DPF Cleaning for municipal and transit agencies across the West Coast to meet CARB & EPA requirements.
- [On-Road](https://dieselemissionsservice.com/our-work/on-road/) - On-Road Retrofits & DPF Cleaning for med/heavy-duty diesel trucks & vehicles. Leading west coast aftertreatment parts & service provider.
- [School Buses](https://dieselemissionsservice.com/our-work/schoolbuses/) - DES has completed many DPF system conversions on buses for CARB & EPA emissions. School bus retrofits can often extend the life of pre-2007 engines.
- [Our Work](https://dieselemissionsservice.com/our-work/) - Examples of successful DPF cleaning, service, retrofits, & more for school buses, on-road, off-road & municipal diesel trucks across CA, OR, & across the US/Canada.
- [Oregon's Environmental Mitigation Plan for School Buses](https://dieselemissionsservice.com/retrofit-projects/odeq/) - Learn about available funding for retrofits for your buses via ODEQ (Oregon Department of Environmental Quality) DES is your retrofit headquarters in Oregon.
- [Diesel Emissions Service – Warranty](https://dieselemissionsservice.com/warranty-disclaimer/) - We stand behind our diesel emissions products and services. Quality Drives Us.