3944125 ECM Cummins ISC 285 Repair

Original price was: $799.00.Current price is: $699.00.

ECM repair service is available for Cummins engine with plate number ISC 285. We’ll return fully reconditioned and tested ECM, ready to be reinstalled on the same vehicle. Specifically designed for Komatsu machinery.

ECM 3944125

We first diagnose the unit, if it’s not repairable or no problems are found the cost is $200.

In this case, we will process a partial refund with the difference.


ECM 3944125 Cummins ISC 285 Repair Service. Your ECM will be returned fully reconditioned, tested, and ready to be installed back to the same vehicle it came off, saving you the time & expense of having a new ECM programmed to your machine. Komatsu Machinery.

ECM 3944125 Cummins ISC 285 Repair Service

ECM 3944125 Cummins ISC 285 Repair Service

ECM 3944125 Cummins ISC 285 Repair Service

We first diagnose the unit; if it’s not repairable or no problems are found, the cost is $200, and the shipping cost.

In this case, we will process a partial refund with the difference.

ECM 3944125 Cummins ISC 285 Repair Service

Engine: ISC 285 Cummins

Part number ECM Cummins:  3944125


Used for Peter Bilt Paccar – Truck model 330 antoher models

Important data for ECM 3944125 Cummins ISC 285:

The Cummins ISC ECM 3944125 is the Engine Control Module (ECM) specifically designed for the Cummins ISC diesel engine. It plays a crucial role in managing the engine’s performance, controlling fuel injection, ignition timing, and various other functions to ensure optimal engine operation.

Some important information about the Cummins ISC ECM 3944125 includes:

  • Compatibility: The ECM is compatible with multiple vehicle applications using the Cummins ISC engine, including medium-duty trucks, buses, motorhomes, and industrial equipment.
  • Power Output: The Cummins ISC engine typically ranges from 225 to 400 horsepower, depending on the specific configuration. The ECM is responsible for managing and optimizing this power output.
  • Diagnostic Capabilities: The ECM has advanced diagnostic capabilities, enabling technicians to troubleshoot and identify potential issues with the engine system quickly.
  • Communication Protocol: The ECM communicates with other vehicle components through various protocols, including J1939, J1587, and J1708, allowing for seamless integration with the vehicle’s overall electronic system.


A 1-year warranty even backs our ECM repair service. Our experts not only repair your ECM but also ensure that it’s built for reliability and long-lasting performance.

Common Problems

  • Blowing fuses
  • No communication
  • Engine shutting down
  • Fault codes in unit
  • Intermittent faults
  • Oil intrusion 
  • Water damaged
  • Injector driver faults


All you need to do is ship your unit to us, and we will diagnose the faults and ship the fixed unit back.  

Why trust us

Our engineering team has over 15 years of experience and more than 10K repaired ECMs and the latest simulation technology. We are always happy to provide you with any technical assistance we can. Feel free to contact us if you wish to discuss the faults you are experiencing before sending in your parts.

ECM Engineering USA / ECM Repair USA

4 Steps

Additional information

Weight104 oz
Dimensions14 × 11 × 11 in