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Front and Rear Oxygen Sensor Codes

motoman41

New Member
Hi Everyone,
This is my first time so thanks for your help.
I bought a 2006 FXSTI in March. I just started riding it and the engine light comes on.
The diagnostic comes up code P0154 rear oxygen sensor inactive and P134 front oxygen sensor inactive.
I reset the codes but they come on after 1 mile.
From what I understand the 2006 does not even have oxygen sensors on it.
The bike does have screaming eagle exhaust.
since I bought it used I do not know if any thing else was done to the bike.
It only has 4000 miles.
Any help or suggestions would be greatly appreciatet.
Thanks, Rick
 
From what I understand the 2006 does not even have oxygen sensors on it.
The bike does have screaming eagle exhaust.
Rick

Rick, look at the pipes several inches down from where they bolt to heads. Are there wires coming from plugs that are about the size of spark plugs?

I'm pretty sure the 2006 FXSTi would have originally come with O2 sensors. If someone has done away with them it would explain your codes.
 
In '06 only the Dyna's had the 02 sensors. The rest came with 02 sensors in '07. I wouldn't think you should that code unless some download is causing it. Do you have some type of fueler on it?
tourbox
 
I am not sure. Thanks for the help.
I guess I will take it to the dealer to check it out.
Again thank you for yor help.
Rick
 
Check your VIN, 07 models all had o2 sensors only the Dynas did in o6
 
HD06FXST078.gif

Here is your main wiring diagram I see NO wires for O2 sensors for your bike
 
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