o2 sensor error code
I've been reading for hours on this and it's hard to get a clear answer...
I installed new pipes and high flow air cleaner, had the bike tuned at HD via a download. Worked good for 10 min, then I get a check engine light and the error codes : P0151 Rear Oxygen Sensor Low P0154 Rear Oxygen Sensor Inactive bike still runs ok but I want to fix this. I did not put new pipe gaskets, just reused the originals, so I am considering a leak but Does anyone have a suggestion? thanks |
Check the wiring to the rear O2 sensor has not been damaged or has come unplugged.
If it is a Softail then the connector for the rear is under the oil tank and a bitch to get to. Easier to remove the battery and go through the bottom of the battery box. Other models just follow the wire and see what you find. |
The wiring was the first thing I checked, everything is connected.
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Perhaps swap the front to the rear and the rear to the front and see if the problems moves with it.
If it does then it probably is a bad/damaged sensor. I have seen them get damaged during removal if they were tight. |
My first guess would be you have a leak on one pipe and you crushed the wrap on the connector on the other cutting off the reference air supply. I can't really decide which would be which.
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So it ran for a little while.
Maybe the exhaust gasket loose. Maybe O2 sensor wire burned. Something like said. gotta check it out. |
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