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Legere Automotive
Diesel Diagnostics
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Diesel Diagnostics

We read the codes everyone else ignores.

Modern diesel engines are complex systems that demand specialist knowledge and professional-grade diagnostic equipment. A generic scan tool gives you codes — Troy gives you answers.

Using factory-level diagnostic software, we perform comprehensive diesel analysis that identifies the root cause, not just the symptom. From DPF regeneration failures to injector balance testing, no diesel issue is beyond our capability.

Common Symptoms

Black smoke under load
Loss of power
DPF warning light
Poor fuel economy
Rough idle
Turbo lag or failure
Check engine light

Our Process

  1. 01 Full OBD-II and proprietary module scan
  2. 02 Live data stream analysis under load
  3. 03 Fuel rail pressure and injector balance testing
  4. 04 DPF soot load calculation
  5. 05 Turbo boost pressure measurement
  6. 06 Root-cause confirmation
  7. 07 Written diagnosis report

What's Included

OBD-II & CAN bus analysis
Fuel injection pressure & balance testing
DPF / EGR diagnostics & solutions
Turbocharger boost & wastegate inspection
Emissions system fault diagnosis
Diesel particulate filter cleaning
Injector coding & calibration
Supported Vehicles
BMW Mercedes-Benz Audi Volkswagen Land Rover Sprinter Volvo

Frequently Asked Questions

How long does a diesel diagnostic take?

Most diagnostics take 1–2 hours. Complex network faults may require additional time.

Do you work on all diesel brands?

We specialize in European diesels — BMW, Mercedes, Audi, VW, Sprinter, Volvo, and Land Rover.

Can you fix what you diagnose?

Yes. We diagnose and repair in-house. No referrals for anything we identify.

Action Sequence

Is Your Vehicle Showing Fault Symptoms?

Connect with Troy directly. We run complete waveform diagnostics and print accurate test reports.

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