DPF, DEF &
derate diagnostics
Failed regens, aftertreatment warnings and reduced power. Troubleshoot DPF, DEF, SCR and EGR faults.
(213) 298-7447 
SANTA CLARITA · CASTAIC · I-5 CORRIDOR
Mobile diagnostics for heavy-duty trucks.
Electrical faults, aftertreatment problems and programming — at your truck’s location.
Owner-operated. Heavy-duty trucks only. We come to you.
FOCUSED ON THE
TRUCKS YOU RUN
01 / WHAT WE DO
A fault code is a starting point. We check the system, trace the problem and explain what your truck needs next.
Failed regens, aftertreatment warnings and reduced power. Troubleshoot DPF, DEF, SCR and EGR faults.
Intermittent faults, wiring issues, communication problems and loss of power. Follow the evidence to the cause.
Software updates, supported module programming and calibrations. Call with your VIN to confirm compatibility.
02 / THE APPROACH
Speak directly with Alex. Explain what happened, get a clear assessment, and decide the next step with the person working on your truck.
Let’s talk about your truckSymptoms, fault history and operating conditions help determine what to test.
Live data and system checks guide the diagnosis, rather than a parts list based on codes alone.
Discuss findings, available on-site work and any further repair needs before moving forward.
03 / WHERE WE WORK
Mobile service in Santa Clarita, Castaic and along the I-5 corridor. Send your location so we can confirm coverage, availability and the travel charge.
Check your locationMobile service only. No walk-in repair shop.
04 / FOR DISPATCHERS & FLEET MANAGERS
You don’t need to be beside it to get started. Send the truck’s location, unit details, symptoms and the driver’s contact information. We’ll discuss availability and scope before the visit.
Email a service request05 / BEFORE YOU CALL
Availability depends on the current schedule and your location. Call to confirm an arrival estimate before planning around a visit.
Call with the truck’s location and symptoms. Diagnostic scope and travel charges are discussed before dispatch. Further work is discussed separately.
Some electrical and aftertreatment work can be completed on site. Parts availability, site access and the type of fault determine the options. We’ll explain when a shop or additional repair is needed.
No. Basta Motors focuses on heavy-duty commercial trucks.
Yes — call with your VIN, engine and the module or programming task involved so we can check support before scheduling.
LET’S GET THE FACTS.