What Makes an O2 Sensor Delete Kit Useful for Your Honda ATV

Accessories October 19, 2026

ByPriyanka Sharma 0 Comments

You get back from a trail ride, and the check engine light is on. Then you see it blinking: two slow flashes, then three quick ones. That's code 23, which the product info links to a bad factory O2 sensor.

According to the Honda's 2021 Foreman Owner's Manual, water getting into the muffler can damage the oxygen sensor and cause an emissions-control-system malfunction. So even a small sensor can become a big deal when the exhaust system has a problem.

For compatible Honda models, we at Vessel Powersports build a plug-and-play O2 sensor delete around this exact code. It comes with a 4-pin connection and an exhaust plug in the box.

What the O2 Sensor Delete Changes

It's pretty simple. Rather than keeping the factory O2 sensor, the delete takes its place and deals with the code 23 problem listed on the product page. It's also designed to add extra, consistent fuel to the machine. So it does more than just turn off a warning light. It's tied to both the sensor and fuel delivery.

What you get:

• A 4-pin plug-and-play design

• Removal of check engine light code 23

• Extra fuel added to the machine

• A block-off plug to replace the factory O2 sensor in the exhaust
  

That tells you what the kit is for, and just as usefully, what it isn't. It's made for the specific Honda models listed on the product page, not for every ATV that throws a check engine light.

Designed for Specific Honda Models

Always check fitment before ordering an ATV part. Two Honda models can look almost identical and still use different components.

This delete is listed for:

• 2014+ Honda Rancher

• 2014+ Honda Foreman

• 2015+ Honda Rubicon

• 2015+ Honda Pioneer 500
  

Don't just look at the model name. The year matters just as much, so check both.

Understanding Code 23

A check engine light won't explain the problem in plain English. On the models this product covers, the product page identifies code 23 as a faulty factory O2 sensor.

The pattern to look for:

• Two slow blinks

• Three fast blinks
  

If you see that, this product may be relevant to your problem. If your ATV is showing a different code, figure that out first instead of assuming the O2 sensor delete kit is the fix.

The 4-Pin Plug-and-Play Design

The best practical detail here is the 4-pin plug-and-play design. It connects to the compatible Honda application without turning into a custom wiring job.

The kit also comes with an exhaust plug to take the place of the factory O2 sensor in the exhaust. There's an installation video on the product page too, which is handy to have while you work.

Extra Fuel After the Factory O2 Sensor

The product description says the delete adds extra and consistent fuel to the machine.

That's worth knowing. The kit isn't pitched as just a way to shut off a dash warning. Its design is also tied to fuel delivery once the factory sensor is gone.

That said, stick to what the page actually says. It makes no claims about horsepower gains, better fuel economy, or quicker acceleration, so don't count on any of those.

What Comes With the Kit

The package has what you need for the setup described on the product page:

• 1 O2 sensor delete

• 1 exhaust plug

• 1 crush washer
  

The exhaust plug is the key piece, since the whole point is getting the factory O2 sensor out of the exhaust. Seeing everything in one place also helps you know what you're getting before you order.

A Few Things to Check Before Ordering

Run through these quickly first.

• Start with the model: Make sure your machine is a Rancher, Foreman, Rubicon, or Pioneer 500.

• Check the year: Rancher and Foreman applications start in 2014+. Rubicon and Pioneer 500 start in 2015+.

• Look at the blink pattern: the product is built around code 23 – two slow blinks, then three fast ones.

• Check the package contents: you should get the O2 sensor delete, exhaust plug, and crush washer.
  

None of this takes long, and it helps you avoid a common mistake: buying a part based on the model name alone without checking the year and application.

A Cleaner Way to Address the O2 Sensor Issue

An O2 sensor is a small part, but the warning that comes with it can leave you wondering what went wrong. For the Honda models listed above, this kit is built for one specific situation: the factory O2 sensor issue shown as code 23.

Vessel Powersports lists the kit with a 4-pin plug-and-play design, an exhaust block-off plug, extra and consistent fuel, and fitment for the Rancher, Foreman, Rubicon, and Pioneer 500 models above. Double-check your exact model, year, and warning code before you order so the kit matches your ATV.

Frequently Asked Questions 

1. What does an O2 sensor delete do on a Honda ATV?

This kit removes the factory O2 sensor from the equation and addresses check engine light code 23. The product page also says it adds extra, consistent fuel to the machine.

2. Which Honda ATVs does this kit fit?

It's listed for 2014+ Honda Rancher, 2014+ Honda Foreman, 2015+ Honda Rubicon, and 2015+ Honda Pioneer 500 models.

3. How do I identify code 23?

The product page describes code 23 as two slow blinks followed by three fast blinks, and links it to a faulty factory O2 sensor.

4. What parts are included with the kit?

You get one O2 sensor delete, one exhaust plug, and one crush washer. There's also an installation video on the product page.

5. Is the O2 sensor delete plug and play?

Yes. It's described as a 4-pin plug-and-play O2 sensor delete for the compatible Honda applications listed on the product page.

Priyanka Sharma