Since they can be used in a wide variety of applications, it comes as no surprise to learn that they are so popular. They are also used in other industries such as mining, forestry, and even home use. However, like all things mechanical, they will run into problems. Error code E03 is one such issue that has been known to affect Komatsu excavators in the past. Here’s what you need to know about it and how you can fix it.

komatsu excavator error code e03-Komatsu Excavator Error Code E03: What It Is And How To Fix It

Komatsu Excavator Error Code E03: What It Is And How To Fix It

When an error code comes up on a Komatsu excavator control panel, it is important to determine what the problem is and how to resolve it. One of these codes is E03, which means that there is a problem with the air cleaner.

What Is Error Code E03?*

The E03 error code on a Komatsu excavator means that there is an issue with the air filter system. It specifically indicates that there is a problem with the voltage on the primary side of the circuit.*

Why Does The Air Cleaner Voltage Drop?*

The compressor in your excavator controls the pressure and flow of air through your system. When you are working in dusty conditions, this can cause problems for the compressor, as dust can build up in its bearings or damage vital components. When this happens, the pressure in your system will drop to zero and you will see an E03 error code.*How Do I Fix Error Code E03?*

To fix this problem, you need to get rid of any dust or debris that might be causing problems for your compressor. If you are working in dusty conditions, you may need to replace your air filters.

komatsu excavator error code e03-What Does Komatsu Excavator Error Code E03 Mean?

Komatsu excavators are heavy equipment used in construction and mining. They are designed to dig foundation, mine, move materials and handle demolition. Komatsu excavators use error codes to identify what is wrong with the machine. Error code E03 on a Komatsu excavator indicates that the main pump motor is not working correctly.

The E03 error code is identified by one long beep and three short beeps in succession. The excavator will continue to beep for approximately 30 seconds, then shut down until you restart it. The E03 error code means that either the main pump motor has failed or that debris has blocked the filter screen.

To check if the filter screen is blocked with debris, locate the filter screen and the drain port on the side of the hydraulic tank. The filter screen sits flush with the side of the tank, while the drain port is a round hole with a nut on top. Unscrew the nut from the drain port, then squeeze in on both sides of the filter screen until it pops out of its groove on top of the tank.

If you find debris inside of your hydraulic tank when you pull out your filter screen, stop and contact your local dealer for further instructions. If there is no debris blocking your filter screen.

Why Am I Getting Komatsu Excavator Error Code E03?

If you own a Komatsu excavator, it’s important to know what to do when your Komatsu excavator throws error codes. We’ve rounded up some troubleshooting tips for one of the most common error codes: Komatsu Excavator Error Code E03.

Komatsu Excavator Error Code E03

Error code e03 refers to a problem with the machine’s hydraulic system. Komatsu excavators come equipped with a variety of hydraulic components, including hydraulic motors, hydraulic pumps and hydraulic valves that work together to keep your equipment running smoothly. Unfortunately, with so many components working at once, it can be difficult to pinpoint exactly which component is causing the problem.

In some cases, problems with the machine’s hydraulic system can be remedied by simply replacing a gasket or seal. It’s also possible that you’ve got a leak in one of your hoses or fittings. Check for leaks around all of the hose fittings and ensure that all of the hose clamps are secured tightly.

If you’re still getting error code e03 after checking your hoses and fittings, you may need to replace your entire hose assembly. That could mean replacing multiple hoses in your machine — and if any of those hoses are corroded or

How Do I Fix Komatsu Excavator Error Code E03?

Error Code E03 indicates that the machine’s controller has lost communication with the engine ECM.

If your Komatsu excavator is displaying an error code E03, there could be several reasons why. Read on to learn more about what this error code means and how you can fix it.

There are some things you can check right away if your Komatsu excavator is displaying an E03 error code. First, make sure that the vehicle’s ignition key is turned to “ON.” Next, check for any open fuses in the main switch and battery fuse box. If these fuses are open, replace them with new fuses of equal amperage. Then, check the wiring harness of the engine ECM for any damage or improperly connected wiring. You should also check the wire harness between the controller and engine ECM for any damage or loose connections as well as for a loose connector at the controller harness side of the connector cable between these two components. Finally, check to see if there are any other codes displayed along with error code E03 to further diagnose your issue.

If all of these checks come back positive, you need to perform a diagnostic test on the machine’s controller and engine ECM. See

How Do I Fix The Oil Pressure Sensor In My Komatsu Excavator?

The oil pressure sensor in your Komatsu excavator is designed to send a signal to the gauge on the dashboard of your machine. It does this by measuring the amount of pressure inside your engine’s oiling system. When you start up your machine, the oil pressure gauge should be in the middle or just below it. If it’s not, then you may have a problem with your pressure sensor.

Here are some things that can be causing problems with your oil pressure sensor:

The most likely culprit is that the connector that attaches the wire to the sensor has come loose. If this is the case, simply reconnecting it will fix your issue.

Sometimes, if you have a lot of debris and dirt getting into the connection point between your wire and sensor, it can cause intermittent issues where your gauge will go back and forth between working and not working. In order to fix this problem, simply disconnecting everything from both ends of your wire and then reconnecting them will usually do trick.

On rare occasions, you may also have an issue with corrosion building up on either end of this connection point as well as in between where they connect together. In order to get rid of these problems all together, taking apart everything related to this area before putting it back together again