How to Bypass Low Oil Sensor On Generator

Oil sensor technology is one of the latest and best technologies that any generator has. There are many benefits of this small yet wondrous technology. It detects the low oil level of the generator and automatically shuts down. But as we know those things expire after some time and there is nothing to worry about.

Sometimes after refilling you will still observe that your oil sensor is indicating a low oil warning and you wonder why it is doing so. The problem is with your oil sensor, it will stop the generator to start due to its automatic shut-off option. If it doesn’t bypass in time it can cause many other problems. This issue is faced by almost every generator owner. We will discuss in detail how you can bypass the low oil sensor on the generator step by step.

So, read this article carefully to know more about how this mechanism works.

What is Oil Sensor?

The oil sensor is the part of the generator that indicates the low oil level in your generator. It makes sure that fuel is at a certain level so that generator works effectively. When this oil sensor notices the low oil level it automatically shuts off the generator. This saves your generator from any harm.

What is Oil Sensor

How does the Oil sensor work?

The oil sensor works on the simple float system. It is present in the oil pan where it is connected to the float and to the rod. The rod is connected to a switch that is mounted on the oil pan.

When the engine is running, the oil level in the pan will rise and fall as the oil is used. The float will rise and fall with the oil level, and the switch will be activated or deactivated depending on the position of the float.

Bypassing Low Oil Sensor on Generator – Pros and Cons

Every technology has its upsides and downsides. We will now discuss that what are the pros and cons of bypassing the low oil sensor on the generator.

  • If your generator has a low oil level, bypassing the oil sensor will allow the generator to run continuously.
  • Sometimes there come some circumstances in which it is not feasible to turn off the generator or there is a danger of something worse. In that case, bypassing the low oil sensor is a great option.
  • When the oil level goes below a certain point where it automatically status off, you don’t need to worry about bypassing the oil sensor on the generator.
  • Bypassing the oil sensor is not a good option. It can prove very dangerous
  • Bypassing the low oil sensor will lead to engine failure or defect in the generator’s important parts
  • It is mechanically not recommended to bypass the oil sensor on the generator


How to Bypass Low Oil Sensor on the Generator – Step by Step

Bypassing a low oil sensor on the generator is not something that can be done by professionals only. If you own a generator you will definitely know some mechanics about your generator. But still, if you don’t know, we are here to help you in this regard. Follow these simple and easy steps carefully and you will get the desired results. So, let’s start;

How to Bypass Low Oil Sensor on the Generator - Step by Step

Some Tips for Safety

  1. Before bypassing the oil sensor, first of all, turn off the generator. Make sure that the breaker is off.
  2. Don’t touch the components of the generator; wait for at least 15-20 min to let it cool down. Because the engine and its parts heat up when the generator is on.
  3. As we know that generator fuel is highly flammable so make sure there is no cigarette or another flammable object near the generator.

Material Required for Bypassing the Low oil sensor on the generator

Materials required for bypassing the generators are as follows;

  • Wrench
  • Screwdrivers
  • Socket

Step#1 Locate the Oil Sensor

After turning off the generator, search for the yellow wire near the fill cap. Every brand has these yellow wires so don’t worry about that.

Step#2 Unplug the Green Wire

The yellow wire should then have a green wire connection attached to it. The color of this connector may vary between brands. It can be taken apart to be unplugged from the wire.

Step# 3 Start the Generator

After that, start your generator and let it run for ten to fifteen minutes, at the very least. This will make it possible for the sensors to come loose from the engine’s bottom. It is crucial that you reassemble the low oil sensor you just disassembled after that period has passed.

Start the Generator

Always keep in mind that the sensor is there for a reason and must be functional before starting a generator again. The only quick, easy, and temporary fix is to bypass the low oil sensor.

What are the Reasons for Low Oil Pressure?

Every small part of the generator is equally important as the big parts. You can also avoid the default oil sensor by the proper maintenance of the generator. There are many reasons that can be the cause of low oil Pressure. Here we will explore these reasons;

1. Insufficient Oil

The generator’s oil may not be sufficient. Simply add more oil to it, and then observe the generator’s behavior to determine what it does. If it doesn’t work, you can discover that your generator has a leak, which is the reason why you are using up oil so quickly. In that situation, repairs are necessary before your generator can function properly.

2. Oil Pressure Gauge is not working

Another reason might be the broken oil pressure gauge that is causing the low oil pressure level. You should examine the oil levels to determine whether they are safe. There is a risk that the gauge itself is off and isn’t accurately monitoring the oil pressure if they and your oil sensor is still going off. If that’s the case, all you have to do is purchase a fresh sensor and install it on your generator.

3. Filter is clogged

A generator with a blocked filter may also have oil problems. The bypass valve may malfunction if your filter fills up with contaminants. This will result in lubricant starvation, which can be quite dangerous. This can cause your generator to become dry, which can be a very significant issue.

Filter is clogged

4. Deterioration,

Of course, another potential source of your low oil sensor’s frequent activation could be the generator’s regular and expected wear and tear. How recently was the generator installed? How frequently have you used it? It’s possible that the generator is nearing the end of its lifespan and has simply reached its limits.

Can you really do much about that? Sometimes, you might be able to get it improved and mended. There are many repair facilities that can get your generator up and running again.

But if the generator you’re using is consistently broken and not functioning properly, you might just want to get a new one. Your generator may be beginning to fail if the low oil sensor keeps sounding even when the oil levels are normal.

How to bypass the low oil sensor on the generator – FAQs

Where is the low oil level sensor located?
A low oil sensor is located just near the right side of the engine. You can detect it from the yellow wire that every generator has.
Can you disconnect the oil pressure sensor?
Yes, you can disconnect the oil pressure sensor from the generator. It is as simple as disconnecting other parts of the generator.
How does generator low oil switch work?
The generator’s low oil switch detects the low oil level in the oil tank and then automatically shuts off to protect the engine from damage.
Is the oil level sensor important?
Yes, the oil lever is one of the most important components of the generator. It tells the generator to automatically shut off. Otherwise low oil level can damage your generator.
What happens when the oil sensor goes bad?
When the oil sensor gets bad, it harms your generator. Parts of the generator, due to friction make problems and affect the working of the engine.



Any home would benefit from having a generator. Any number of tools or equipment can be powered by it. The use of your generator to its fullest extent is hindered by a few factors, though. One of them is a low-oil sensor.

Despite being an excellent tool that was typically established for the right reasons, it can occasionally end up being more of a hassle than anything. Proper maintenance is necessary. Bypassing the generator is an option if you can’t afford the turning of the generator. Keeping an eye on the oil level is the only solution for that.

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