Serving the Phoenix metro and surrounding areas
Know Before It Fails. Fix Before It Costs.
We go beyond basic scans. Our complete engine checks give you a clear picture of performance, wear, and potential failures so you can plan smarter, prevent downtime, and extend vehicle life. Fast, expert, and built around your fleet’s bottom line.
We are certified venders For
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Know What’s Wrong. Fix It Before It Gets Worse
Not Sure What That Engine Light Really Means?
Your truck’s throwing a code. Performance is down. You’re choosing between guessing and gambling, or wasting time in the shop without answers.
Here’s what that usually leads to:
Wasted hours chasing the wrong fix
Breakdowns that could’ve been prevented
Mounting repair costs from avoidable damage
KTS Diesel’s Complete Engine Diagnosis cuts through the noise fast, with expert insight and real answers, so you know exactly what’s wrong and what to do next.
Our skilled diesel mechanics handle engine diagnostics, repairs, and overhauls quickly, whether on-site or in-shop. With parts readily available and streamlined processes, we reduce downtime and control costs. Our preventive maintenance keeps your fleet running smoothly. We don’t just fix trucks; we keep you moving.
Mobile & In-Shop Engine Diagnostics You Can Trust
Diesel Diagnostic Special!
Save $100 Today! Full Diesel Diagnostic for Only $45.
Full System Scan
Complete diagnostic across engine, transmission, aftertreatment, and maintenance systems.
Professional Fault Code Readout
A certified diesel tech will explain what the codes mean and what to do next.Clear, Honest Estimate
Know exactly what repairs andcosts are neededt, no pressure.Maintenance Alert? We’ve Got You Covered
If it’s routine, we’ll help you plan the maintenance to stay on schedule.Limited-Time Bonus*
Apply your $45 discount toward any approved repair within 5 business days.
Smarter Diagnostics. Fewer Breakdowns.
Comprehensive System Check.
Expert Insight, Not Just Codes.
$45 Toward Repairs.
complete engine diagnosis: your questions answered
Q: What does a complete engine diagnosis include?
A: We run a full system scan across engine, transmission, aftertreatment, and maintenance systems. You’ll get a detailed, expert assessment of your truck’s condition, no guesswork.
Q: Is this available onsite, or do I need to bring trucks in?
A: We offer both. Choose what works best: mobile diagnostics at your location or fast in-shop service at ours. Either way, we keep disruption to a minimum.
Q: Will I get more than just a code readout?
A: Yes. Our certified diesel techs break down what the fault codes actually mean, explain the root cause, and recommend next steps based on your fleet’s needs.
Q: What if the issue turns out to be minor or maintenance-related?
A: We’ll let you know right away and help you plan routine service before it turns into a bigger problem, saving time and money down the line.
Q: How does this help reduce downtime?
A: Accurate diagnostics lead to faster repairs and better planning. We help you act early, prevent major failures, and keep trucks in rotation.
Q: How fast can you perform the diagnosis?
A: Most diagnostics are completed in under an hour. Whether it’s at your yard or in our shop, we move fast so your fleet can, too.
Q: Is this service designed for fleets?
A: Absolutely. KTS Diesel specializes in fleet management for operations with 3 or more trucks. Our diagnostic services, workflows, and support systems are built to meet the demands of busy fleet managers who need fast answers, reliable service, and minimal downtime across multiple vehicles. We’re not just a repair shop, we’re your fleet partner.