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Fleet Computer Diagnostics Services

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Fleet Diagnostics Using JPRO & TEXA | CTX Fleet Services


100% Mobile Advanced Computerized Diagnostics for Light, Medium, & Heavy-Duty Fleets Across Central Texas

When a check engine light turns on or a vehicle goes into limp mode, every minute of downtime costs your business money. Modern commercial vehicles rely on complex electronic networks and engine control modules (ECMs) that standard auto parts store scanners simply cannot read.

At CTX Fleet Services, we bring dealer-level capability directly to your fleet using industry-leading JPRO Professional and TEXA Commercial Diagnostics. As a 100% mobile service, we come directly to your job site, yard, or roadside location in Austin and surrounding Central Texas communities. Our ASE-certified technicians deliver fast, precise fault identification and quick turnarounds right where your vehicles are parked.

The Power of JPRO & TEXA Commercial Diagnostics

Traditional guesswork and trial-and-error part replacements lead to inflated repair bills and extended downtime. By deploying JPRO and TEXA mobile diagnostic systems directly to your location, CTX Fleet Services bridges the gap between OEM software and multi-brand versatility.

JPRO Fleet Diagnostics


JPRO provides comprehensive, fleet-wide diagnostic coverage across medium- and heavy-duty vehicles, allowing our mobile technicians to scan the entire vehicle in under a minute.

  • Full Vehicle Health Scans: Reads engine, transmission, ABS, body controller, and emissions systems simultaneously.
  • Bi-Directional Testing: Enables forced DPF regenerations, cylinder cutout tests, fan override tests, and injector cutouts.
  • Guided Troubleshooting: Translates OEM-specific fault codes into clear, actionable repair steps on-site.
  • Live Sensor Monitoring: Captures real-time operating data to pinpoint intermittent performance issues.

TEXA Multi-Brand Diagnostics


TEXA is the global leader in multi-brand commercial vehicle software, giving CTX Fleet Services deep access into light commercial vehicles, heavy duty trucks, trailers, and construction equipment.

  • Multi-System Parameter Adjustments: Reset maintenance intervals, calibrate sensors, and configure ECU parameters in the field.
  • Advanced Wiring Diagrams & Schematics: Interactive component pinouts for rapid electrical troubleshooting on location.
  • Broad Fleet Coverage: Full diagnostic depth for American, European, and Asian commercial vehicle platforms.
  • Trailer & ABS Diagnostics: Diagnostic communication with Haldex, Bendix, and Wabco trailer braking systems.

On-Site Diagnostic & Mobile Repair Solutions

Identifying the fault code is only the first step. CTX Fleet Services provides end-to-end mobile repair solutions based on your diagnostic scan:

1. Diesel Aftertreatment & Emissions


  • DPF (Diesel Particulate Filter) differential pressure analysis & forced regens
  • DEF (Diesel Exhaust Fluid) system testing & SCR efficiency diagnostics
  • EGR valve inspection, cleaning, and replacement

2. Engine & Drivetrain Performance


  • Electronic control module (ECM) flashing and fault clearing
  • Fuel injection system testing & timing adjustments
  • Automated transmission calibration and sensor diagnosis

3. Electrical & Chassis Electronics


  • CAN bus communication fault tracing
  • Battery, starter, and alternator dynamic load testing
  • Anti-Lock Braking System (ABS) module troubleshooting

Mobile Fleet Support Across Greater Austin

We operate as a fully mobile service fleet, eliminating the hassle, tow fees, and lost hours associated with transporting equipment.

  • Mobile Diagnostic Units: Our service trucks come fully equipped with JPRO and TEXA diagnostic rigs, allowing us to perform full vehicle scans and bi-directional tests right in your yard, facility, or job site.
  • Predictive Mobile Maintenance Scans: Integrate diagnostic scans into your regular preventative maintenance schedule to catch failing components before they trigger roadside breakdowns.

Frequently Asked Questions


Why are JPRO and TEXA better than standard handheld OBD-II code readers?

Standard OBD-II scanners only read basic emission codes on light-duty vehicles. JPRO and TEXA read OEM-specific proprietary fault codes across all vehicle networks (including J1939 and J1708 heavy-duty protocols) and support bi-directional tests like forced DPF regens and cylinder cutouts.

How does your mobile service work for diagnostics in Austin?

Our mobile fleet service units bring JPRO and TEXA diagnostics directly to your facility, job site, staging yard, or breakdown location across the Greater Austin area. You don't need to haul or tow your vehicles anywhere.

How often should our fleet undergo commercial diagnostic scans?

We recommend connecting your vehicles to diagnostic software during every scheduled mobile preventative maintenance (PM) service—typically every 5,000 to 10,000 miles or 250 operating hours—to identify developing faults early.

What vehicle brands and types do you support?

Our mobile JPRO and TEXA systems support light-duty vans up to Class 8 heavy-duty trucks and equipment, including Freightliner, Kenworth, Peterbilt, International, Volvo, Mack, Ford, Isuzu, Hino, Sprinter, Cummins, Detroit Diesel, Caterpillar, PACCAR, and more.

Schedule Mobile Fleet Diagnostics in Austin, TX

Keep your drivers on the road and eliminate unnecessary towing costs with mobile diagnostics from CTX Fleet Services.

  • Service Area: Austin, Round Rock, Pflugerville, Cedar Park, Leander, Buda, Kyle, Manor, and surrounding Central Texas corridors (I-35, SH-130, US-183, Highway 71).
  • Call Us Today: 512-253-1440
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