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Diagnostics & Recovery

Fast Answers
Clean Recovery
Calibrations
Remote-First

ECM Diagnostics & Recovery For Commercial Diesel Engines

When a truck suddenly throws fault storms, derates, limp mode, or no-start after a programming event, you don’t need generic troubleshooting. You need to confirm what changed, validate what’s in the ECM, and recover it back to a known-good state.

Shamrock provides remote diagnostics and recovery focused on the software side: calibration integrity, programming correctness, and safe resets. This is designed for repair shops and fleets who need clear direction, not guesswork.
  • Pinpoint programming issues
  • Calibration analysis
  • Identify bad flashes
  • Clear fault codes
  • Restore to known-good files
Smart recovery starts with a clean read

Key Features

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Rapid Fault-Finding

Quickly narrow whether the root cause looks like programming, calibration integrity, module state, or communication.
  • Save Time
  • Dealer-Friendly
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Fix Bad Programming

When a tune, update, or flash was done incorrectly, we identify what’s wrong and correct it using the safest path available.
  • Files
  • Writes
  • Recovery
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Calibration Analysis

Verify the calibration you have before you do anything else. Know what you’re working with with proper analysis & validation.
  • Compare
  • Spot
  • Confirm
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Communication & Access

No-comm situations can be a workflow killer. We help restore access where possible and confirm stable connectivity.
  • Verify
  • Connect
  • Security
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Clears, Resets & Relearning

Clear codes, perform appropriate resets, and get the truck back to a stable state after recovery steps.
  • Clear fauls
  • Reset
  • Verify
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Post-Repair Verification

After a fix, confirm you’re not walking into a comeback. We help validate results and identify any remaining ECM-side concerns.
  • Confirmation
  • Support

Who Needs This?

Diesel Repair Shops

When the truck is stuck in limp mode and the history is “someone flashed it.”

Fleet Owners

Minimize downtime and avoid unnecessary parts swapping across units.

Owner / Operators

Get clarity fast when a programming change triggers codes or derate.

Performance & Tuning

When drivability issues or faults point to file integrity, mismatches, or a bad write.

Common Problems We Solve

Diesel emissions systems cause all kinds of downtime, headaches, and repair bills, especially when they’re stacked with sensors, DEF, and regens. We solve the issues that keep trucks sidelined and engines running below their best.

Derate, Limp Mode & Faults

Faults that appear all at once, don’t match symptoms, or started right after programming.

No-Start / No-Comm

A failed write, interrupted update, or access issue that leaves the truck stuck.

Mismatch & Variants

Wrong calibration variant, incorrect strategy, or module setup that causes chaos.
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  • “Ran fine yesterday, now it’s a Christmas tree”
  • Sudden derate after a tune or update
  • Random codes that don’t align with hardware checks
  • Truck won’t communicate with the module reliably
  • Suspected wrong file/variant or incomplete programming
  • Need a verified baseline before further diagnosis

Benefits Of Diagnostics & Recovery

Maximize the efficiency and reliability of your commercial diesel engines with state-of-the-art ECM/ECU diagnostics and recovery from Shamrock Diesel Tuning. Our cutting-edge technology identifies and rectifies issues swiftly, ensuring optimal performance and minimized downtime. Prevent costly repairs, boost engine longevity, and achieve a seamless operational workflow.

Clarity

Know if you’re dealing with software, access, or mechanical.

Speed

Cut the dead time. Move from symptoms to a plan quickly.

Cost Control

Reduce wasted labor and unnecessary parts replacements.

Confidence

Validated calibration state and documented recovery steps.

How It Works

1

Intake & Snapshot

You share the platform details, what happened, and what tools you have. We define the fastest safe path.
2

Analysis & Recovery

We connect, gather what we need (reads/logs where applicable), analyze the calibration state, and correct issues.
3

Verify & Clear

We clear codes as appropriate, confirm stable communication, and verify basic operation so you can road test or return to service.
👍🏻

Ongoing Support

If we uncover a mechanical lead, we’ll call it out clearly so your team can diagnose efficiently without chasing ghosts.

FAQ

Engine/platform details, what changed recently (tune, update, module swap), current symptoms, and what interface/tooling you have access to.

Often, yes. We’ll verify what’s in the ECM and recommend the safest correction path (restore, reflash, or recovery procedure).

Sometimes. We’ll determine if it’s an access/workflow issue, a module state problem, or something outside the scope of remote recovery.

Yes, when it makes sense as part of a verified recovery or correction process, and we’ll confirm they don’t immediately return.

We can’t inspect hardware remotely, but we can often rule out calibration and programming variables. If it looks mechanical, we’ll say so.

Yes. Shops and fleets usually get the smoothest workflow since they have consistent access tools and processes.

Ready to get started?

Rev up your diesel game with Shamrock Diesel Tuning! Transform performance, boost efficiency, and experience the power your engine was built for. Ready to take the leap? Let’s unlock your engine’s true potential today!

Shamrock Diesel Tuning Inc.

Calgary · Canada
1-877-290-2492
Open Monday to Friday:
8AM - 5PM

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