EGR and DPF problems? We specialize in fast, accurate aftertreatment system repairs that keep your truck compliant, efficient, and on the road. For all your aftertreatment system needs, we have you covered.

EGR and DPF Repair in Moses Lake, WA
Excessive regens, loss of power, check engine lights—if you’re dealing with EGR or DPF issues, you’re not alone. At 509 Roadside, EGR and DPF repair is one of our core specialties. We service aftertreatment systems on trucks, RVs, buses, trailers, and heavy equipment with precision diagnostics and targeted repairs.
Common aftertreatment system repairs include:
- Truck DPF cleaning and regeneration services
- EGR valve and cooler replacement
- DPF pressure sensor and temperature sensor repairs
- Forced regeneration and fault clearing
- DEF system diagnostics and fluid level testing
What Makes Us Different
509 Roadside isn’t your average diesel shop. Our technicians are trained in advanced aftertreatment diagnostics, and we know how to handle complex emission systems without guesswork. Every EGR and DPF repair is done with precision to keep you compliant and out of derate.
- In-shop service for trucks, RVs, trailers, buses, and fleets
- Roadside assistance available during business hours
- Honest timelines and transparent estimates
Need us on the road? Our mobile service team can assist during weekdays for breakdowns and scheduled on-site repairs. If you’re stuck and need help, 509 Roadside has you covered with 24/7 roadside assistance.
FAQs
How Can I Get EGR and DPF Repair?
Call 509-855-4932 today. Whether it’s sensor replacement, forced regen, or full DPF cleaning, our specialists will get your truck back to peak performance.
Is It Safe to Drive With a Bad EGR System?
Not for long. A faulty EGR system can reduce engine performance, increase emissions, and eventually cause damage to other components. It’s best to have it inspected and serviced immediately.
What Are the Signs of a Clogged DPF?
A clogged DPF can cause slow acceleration, poor fuel economy, excessive regens, or dashboard warning lights. If ignored, it can trigger limp mode or complete derate. Cleaning or replacing it is essential.
What Areas Do You Serve For EGR and DPF Repair?
We’re located at 11969 Debonair Street Northeast, Moses Lake, WA. We also proudly serve Spokane, WA; Kennewick, WA; Pasco, WA; Richland, WA; Yakima, WA; Wenatchee, WA; and Ellensburg, WA.
Schedule Your Semi Truck DPF Filter Cleaning Now: Call 509-855-4932!
If your truck’s in regen mode, throwing EGR codes, or losing power, don’t wait. Call 509-855-4932 now to schedule expert EGR and DPF repair or cleaning today.
What They're
Saying About Us
See why our customers consider 509 Roadside their go-to repair shop in Moses Lake, WA and the surrounding areas!
Our resident transport bus broke down on the way back from Wenatchee. 509 Roadside made arrangements to get the vehicle towed to the shop and had it fixed the very next day. Great service!
Totally helped me out of a jam. Last Wednesday 2/26/25 late in the day, my 2011 Isuzu Blue Bumper Box truck had a red check engine light go off. You guys were my angels. Thanks so much for clearing the code and getting my truck back on the road. It made it all the way to Spokane and back to Seattle.
Joseph did a great job replacing a small engine for us. He searched, bought and replaced it for us while keeping us informed every step of the way. With great pricing and service, we will continue to utilize him in the future for our needs.
Had issue with semi shutting down due to coolant level issue, contacted 509 to assist and they were earlier then expected, very friendly and got me back on the road quickly and went beyond duty and even checked other things to prevent any other issues. Would call them first if I ever have a problem down road.
509 Roadside saved my day. I locked my keys in my trunk and called insurance to have them help connect me with someone to get into my car. I was waiting for the maintenance truck to come, 2.5 hours after my call. 509 Roadside was just driving by and helped. Super nice guy!
Joseph helped me out when my car couldn’t shift gears coming from Spokane, going back to Western WA. It was 99 degrees out and he came from his house to help me. He was calm, knowledgeable, communicated well, and honest. He even called me when I got back home to make sure I made it and gave me some car tips. There aren’t too many people out there like him. I believe in karma, and Joseph deserves all the best karma his way.
Had my starter go out they had a new on hand and I was back on the road right at 2 hours, great job 509.
Came in for an issue, fixed extremely quick. The most honest mechanics ive seen in a long time. Will definitely be coming back for any future issues!
Contact 509 Roadside
Need roadside assistance, have questions, or want to schedule your truck or trailer in for a service or repair? Get in touch!