Deleting O2 sensor
Deleting O2 sensor
Hi all,
I ordered a Shorty exhaust from Freedom Performance as well as the O2 sensor eliminator.
My dealer is telling me that i will have the engine light on the dashboard and doesn’t know a way to fix this.
Any ideas what can be done?
Thank you all.
I ordered a Shorty exhaust from Freedom Performance as well as the O2 sensor eliminator.
My dealer is telling me that i will have the engine light on the dashboard and doesn’t know a way to fix this.
Any ideas what can be done?
Thank you all.
Seasoned HDF Member
Joined: Mar 2010
Posts: 38,603
Likes: 6,438
From: Honah Lee
The rear O2 sensor tells the ECM the converter is not working. The device that you plug in to tell the ECM what it needs to see. ECM probably monitors for 0.1 to 1.0 volt and a necessary 0.45
In the USA, it's a $10,000 fine for a legal business to violate pollution laws. Why your mechanic is reluctant to fix the light probably. Sure you have laws too. Think it's up to €7,500 for him.
The USA Harleys should be require just like our cars to have the rear sensor also.
Guess the device ZPN4444 is not working good enough to trick ECM. I found the same issue with the dash light with after market junk on my granddaughter's car when trying to get a state inspection in VA.
In the USA, it's a $10,000 fine for a legal business to violate pollution laws. Why your mechanic is reluctant to fix the light probably. Sure you have laws too. Think it's up to €7,500 for him.
The USA Harleys should be require just like our cars to have the rear sensor also.
Guess the device ZPN4444 is not working good enough to trick ECM. I found the same issue with the dash light with after market junk on my granddaughter's car when trying to get a state inspection in VA.
Last edited by Jackie Paper; Jul 25, 2025 at 06:54 AM.
Stellar HDF Member
Joined: Jan 2017
Posts: 2,681
Likes: 2,083
From: Massachusetts
The rear O2 sensor tells the ECM the converter is not working. The device that you plug in to tell the ECM what it needs to see. ECM probably monitors for 0.1 to 1.0 volt and a necessary 0.45
In the USA, it's a $10,000 fine for a legal business to violate pollution laws. Why your mechanic is reluctant to fix the light probably. Sure you have laws too. Think it's up to €7,500 for him.
The USA Harleys should be require just like our cars to have the rear sensor also.
Guess the device ZPN4444 is not working good enough to trick ECM. I found the same issue with the dash light with after market junk on my granddaughter's car when trying to get a state inspection in VA.
In the USA, it's a $10,000 fine for a legal business to violate pollution laws. Why your mechanic is reluctant to fix the light probably. Sure you have laws too. Think it's up to €7,500 for him.
The USA Harleys should be require just like our cars to have the rear sensor also.
Guess the device ZPN4444 is not working good enough to trick ECM. I found the same issue with the dash light with after market junk on my granddaughter's car when trying to get a state inspection in VA.
What do you work for the EPA now??
Stellar HDF Member
Joined: Jan 2017
Posts: 2,681
Likes: 2,083
From: Massachusetts
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Intermediate
Joined: Jun 2022
Posts: 25
Likes: 14
From: Serbia
Just leave O2 sensor plugged and tie him under , you wont have any light or problem with bike . If you do dynojet tuning by yourself on autotune you will have problems. But get from FuelMoto and you are fine.
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There is no need to dynojet just for an exhaust anyway? Only when I will change the air filter?