Seeing power loss, frequent regens, or warning lights? This page breaks down EGR and DPF repair, what causes failures, and how our mobile team gets you rolling again—on your schedule, at your location.
Mobile Aftertreatment Repair Simi Valley, CA
When soot builds or sensors drift, performance drops and derate risk rises. We start with full-system diagnostics—scan data, differential pressure, inlet/outlet temps, and leak checks—so we fix causes, not just clear codes. Our process verifies EGR system health with command tests, flow checks, and cooler inspection. If components are seized or worn, we handle valve replacement and sealing surfaces on-site. We also evaluate DEF levels, inspect for crystallization, and troubleshoot malfunctions so failed dosing doesn’t masquerade as a DPF issue. If lines or injectors are broken, we replace and re-test. We don’t just serve Simi Valley, our expertise extends to Santa Clarita, Oxnard, Thousand Oaks, and Valencia, providing dependable service wherever your trucks run.
For soot control, we perform DPF repair and maintenance to restore backpressure and stabilize regen frequency. Where contamination is severe, we provide DPF cleaning or removal for off-unit thermal service, then reset adaptives and road-test.
What Makes Us Different
You choose the place and time—yard, job site, or roadside—and we show up ready to diagnose and repair. Because we’re fully mobile, you avoid towing, waiting rooms, and moving equipment off-route. Any make or model is welcome; mixed platforms aren’t a problem, so one call covers your entire lineup. We operate 24/7, which means you schedule work around deliveries and driver availability, not shop hours. That flexibility shortens downtime, simplifies dispatch, and keeps commitments intact.
Communication stays clear from start to finish. You’ll get findings in plain language, options that respect your timeline, and upfront pricing. Repairs happen on-site whenever possible—from sensor replacements to EGR service to DPF cleaning—and we validate the fix with data, resets, and a confirmation drive. The result is a reliable solution without the disruptions that come with traditional shop visits.
Contact Us About EGR System & DPF Repair Now: Call 818-917-1673!
If you need EGR system and DPF repair, call 818-917-1673. We’ll come to you, run targeted diagnostics, and complete the right repair—cleaning, component replacement, or recalibration—so regens normalize and power returns. Expect straightforward pricing, clear next steps, and service that fits your schedule.
FAQs
What Areas Do You Serve For EGR And DPF Repair?
Based in Simi Valley, CA, we proudly serve Santa Clarita, Oxnard, Thousand Oaks, and Valencia, along with nearby areas including Camarillo, Agoura Hills, San Fernando Valley, Castaic, and Frazier Park, CA — all with convenient mobile service that meets you wherever you operate.
What Is An EGR System?
An EGR system routes a metered amount of exhaust back into the intake to lower combustion temperatures and reduce NOx emissions. It includes a valve, cooler, passages, and sensors. Proper flow is critical; carbon buildup, sticking mechanisms, or cooler restrictions can trigger drivability issues and fault codes.
Is It OK To Drive With A Bad EGR System?
Driving with a faulty EGR can lead to rough running, increased emissions, and potential DPF overload from poor combustion. Continued operation may force frequent regens or even a derate. It’s best to diagnose promptly to prevent collateral failures and restore normal engine and aftertreatment function.
Book Mobile Service Now
Ready to reduce downtime and get reliable aftertreatment performance? Call 818-917-1673 for on-site diagnostics and repair—any make or model, 24/7.
Our Heavy-Duty Truck Repair Services
When something breaks, you need clear answers and a fast fix. We arrive with professional diagnostic tools, stocked service trucks, and the right know-how to repair on the spot whenever possible.
We service any make or model and coordinate parts quickly when a return visit is required. Before you roll, we verify repairs with code clears, pressure checks, or test drives so the fix is proven—not guessed.
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Testimonials
Here's what our customers are saying, feel free to leave us a review!
Viejo
The Rolling Wrench provides professional, 24/7 mobile diesel mechanic services throughout Santa Clarita, San Fernando Valley, Thousand Oaks, Oxnard, & beyond. Contact our team today for more information, to request a quote, and to schedule service.
