Full-Service Diesel Truck Repair in San Diego
Expert diagnostics, repair, and maintenance for all truck sizes. Specializing in complex DPF, DOC & SCR aftertreatment systems to keep your fleet compliant and on the road.
Hours: Mon-Fri 7am-6pm, Sat 8am-2pm
Visit: 9900 Via de la Amistad, San Diego, CA 92154
Our Specialized Diesel Truck Services
At Otay Truck Repair, we provide comprehensive, expert-level service across all critical systems of your commercial vehicle. Our specialization ensures your fleet remains compliant, efficient, and on the road.
Engine Repair & Diagnostics
Precision diagnostics and repair for all diesel engine makes and models, from minor tune-ups to major overhauls.
- Advanced computer diagnostics for accurate fault identification
- Complete engine rebuilds and component replacement
- Fuel system service and injector calibration
- Turbocharger and cooling system repair
Aftertreatment Systems Service
Expert maintenance and repair of DPF, DOC, and SCR systems to ensure emission compliance and optimal performance.
- DPF (Diesel Particulate Filter) cleaning, repair, and replacement
- DOC (Diesel Oxidation Catalyst) diagnostics and service
- SCR (Selective Catalytic Reduction) system troubleshooting and DEF handling
- Full system regens and forced regeneration procedures
General Maintenance for All Truck Sizes
Preventative and scheduled maintenance services designed to maximize uptime for light, medium, and heavy-duty trucks.
- Comprehensive PM (Preventative Maintenance) inspections and service
- Brake, steering, and suspension system repairs
- Electrical system diagnostics and repair
- Oil changes, fluid flushes, and filter replacements
Need expert service for your diesel truck? Contact us directly.
Why Choose Our Specialists?
Our focused expertise in complex aftertreatment systems like DPF and SCR means we solve problems others can't, keeping your fleet compliant with EPA regulations and avoiding costly downtime.
24/7 Emergency Truck Repair
Breakdowns don't wait for business hours. We're here when you need us most.
When your truck is down, every minute counts. Otay Truck Repair provides immediate, expert emergency diesel repair services across San Diego and Southern California. Our specialized technicians are on call 24 hours a day, 7 days a week to get your fleet back on the road and minimize costly downtime.
Rapid Response
We prioritize emergency calls with a target response time. Our mobile service units are equipped to handle critical diagnostics and repairs on-site whenever possible.
Comprehensive Emergency Services
From engine failure and aftertreatment system faults (DPF, SCR, DOC) to electrical issues and brake system repairs, our team is trained to diagnose and fix the problem fast.
Mobile & On-Site Service
Serving San Diego, Otay Mesa, and the surrounding region. We can often come to you, whether you're stranded on the highway or at your facility.
Need Emergency Service Now?
Call our dedicated emergency line:
Available 24 hours a day, 7 days a week.
For non-urgent inquiries, please visit our Contact page.
Trusted Brand Expertise
At Otay Truck Repair, we have the specialized knowledge to service the major engine and chassis brands that power your fleet. Our technicians are experienced with the unique specifications and common issues of each manufacturer, ensuring precise diagnostics and repairs.
Cummins Engines
Expert diagnostics and repair for ISX, X15, and other series. We handle everything from fuel system issues to aftertreatment integration.
Detroit Diesel
Specialized service for DD13, DD15, and DD16 platforms, including complex SCR and DPF system troubleshooting specific to Detroit engines.
Paccar MX Engines
Comprehensive maintenance and repair for Kenworth and Peterbilt trucks equipped with Paccar MX-11 and MX-13 engines.
Why Brand-Specific Knowledge Matters
Modern truck systems are highly integrated. Our targeted expertise means faster, more accurate repairs that get your trucks back on the road with confidence, maintaining manufacturer performance standards and emission compliance.
