Free fault codes reading using the Mochester App
Fault codes reading

FREE

Available

24/7

Necessary equipment

Stable internet connection Diag adapter Mochester App
Get this service via the FREE Mochester App on your Windows device!
Mochester App

Equipment requirements

  • Laptop/PC/VM with Windows Vista, 7, 8, 10, 11
  • Communication adapter: 88890020, Vocom or ANY RP1210C (Nexiq USB-Link, Noregon DLA , DPA5, Inline, etc)
  • Download the Mochester App (M4 App) and install it

We do not need Tech Tool 2 or other foreign software. We use only self-developed tools for best result.

Description

This operation shows you a report with current and stored fault codes in all ECUs.

Applicability

Applicable for most of the Mack / Volvo / Renault / UD trucks and buses, Volvo CE and Volvo Penta as well, manufactured 2004 and newer.

When is the service needed?

If a vehicle has active or fault codes, this service provides quick diagnostics before repair or tune.

This services proves useful where warning lights or derate conditions exist, multiple fault codes exist in multiple vehicle subsystems, or diagnostics is required before remote tuning, programming, or replacing components. This service is helpful when OEM diagnostic services are not available or fault codes are needed to be checked while the vehicle is being driven.

This service is also helpful if you need to inspect ECU and sensor faults, diagnose control module communication faults, or confirm existing and past fault data before buying a used vehicle.

The report includes present and past fault codes from all existing ECUs. This report helps prevent costly repairs and/or prolonged service on the vehicle.

 

How to get the solution?

  1. Log in your shop account. Not registered yet? Time to do it now.
  2. Make sure your store wallet balance is more than $0.00.
  3. Download the Mochester App (M4 App) and install it.
  4. Run the Mochester App.
  5. Use your shop credentials to log in (yes, from this shop).
  6. Follow the instructions of the wizard.

Download Mochester App (M4 App)

Guides & Instructions

Tuning results

  • ECU fault code reading for trucks, buses and heavy machinery
  • Clear, practical interpretation of diagnostic trouble codes (DTCs)

Warranty Terms and Conditions

This service is not covered by warranty.

Company advantages

  • Fast tuning: With the Mochester App (M4 App), customers can order and apply tuning solutions without scheduling TeamViewer sessions.
  • Safe and Controlled Tuning Workflow: The OTP-based confirmation system, the guided and approved connection, and the verified tuning process protect against the risks of incorrect programming and/or configuration
  • Wide hardware compatibility: Works with the RP1210-compatible adapters including Nexiq, Noregon, DPA5, Inline 6, and Scanmatik
  • Advanced 2014+ vehicle support: The Mochester App, combined with the VLOMINGO Tuning Adapter works with Volvo, Mack, Renault, UD, Prevost, Volvo CE, and Volvo Penta platforms, and also provides access to TRW EMS 2.3 and TRW EMS 2.4 ECUs
  • Advanced 2023+ and 2025+ vehicle support: Mochester App with the RAZDOLBOSCH Tuning Adapter provides wide support for 2025+ (USA) Volvo and Mack trucks, Prevost and Volvo buses, as well as 2023+ (Euro 6) Volvo and Renault trucks and Volvo buses, including protected and difficult-to-access modern Bosch ECM 4.x platforms
  • 24/7 technical assistance: Integrated support system with rapid diagnostics assistance, warranty handling, and troubleshooting through chat on dl.ge website, WhatsApp, or the Mochester App (M4 App) support section

Additional Information

Think of this as a "health check" for your truck’s electronic brain. It’s a remote diagnostic service where we dive into the ECU to read and analyze the error codes hidden inside. This goes beyond just seeing a warning light on the dash—it helps us pinpoint current faults, system glitches, or even those quiet "pending" problems that haven't caused a breakdown yet but are dragging down your performance.

Modern diesel engines are basically computers on wheels. Every part of the truck—from the turbo and fuel system to the transmission and emissions sensors—is monitored by the ECU. When something isn't working right, the computer logs a specific fault code. But here’s the thing: a code is just a string of numbers. Understanding what that code actually means for your specific truck is the part that really matters.

Our service provides a clear reading and a real-world interpretation of those codes. We help you figure out if you're dealing with a minor sensor glitch, an urgent repair, or something that can wait until the end of the shift. It’s a massive help for fleet owners and independent operators who need fast, reliable answers before they commit to expensive shop time.

Key Benefits:

  • Professional ECU fault code reading for trucks and heavy machinery
  • Clear, practical interpretation of diagnostic trouble codes (DTCs)
  • The perfect option for fleet diagnostics and preventive maintenance
  • 100% remote service—no need to haul the truck to a workshop
  • Fast troubleshooting support when you need answers right away
  • Works with almost all modern diesel ECU systems
  • Saves money by avoiding unnecessary parts-swapping and downtime

Have any questions

Check our FAQ Section for answers to common technical questions.

Reviews (2)

2 reviews for Fault codes reading

  • r*****is_86

    May 4, 2024

    Works like jpro or any other diagnostic service but shows more. I was very happy with it and would definitely use again. I also did delete on a 2020 Volvo that only look about 20 min. Happy with that too.

  • mit******en

    April 16, 2025

    Power Tech Tool was not cooperating with my truck one day. Out on the road on a call-out so I gave this a try. Within a few minutes had a full PDF report of all codes in the truck. Was able to diagnose and get to repair!
    Thanks again for the service.

Only logged in customers who have purchased this product may leave a review.