Keep getting error code - PO151
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Road Master
Joined: Jul 2013
Posts: 979
Likes: 176
From: PA
Keep getting error code - PO151
Hey All, I keep getting an error code on the ECM PO151.
Had a trip last month to NC did 1850 miles and it came on twice, went out today and it came on.
Any idea's what to look for?
Had a trip last month to NC did 1850 miles and it came on twice, went out today and it came on.
Any idea's what to look for?
Seasoned HDF Member
Joined: Aug 2006
Posts: 24,428
Likes: 30,651
From: Pennsylvania
Check your connections and wiring to the O2 sensor.
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Road Master
Joined: Jul 2013
Posts: 979
Likes: 176
From: PA
i will check connections. The only thing i did prior to trip was change battery, anything under the seat that can cause this?
Seasoned HDF Member
Joined: Mar 2010
Posts: 38,310
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From: Honah Lee
Is it possible for your after market tuner when you took the power away with the battery change to loose something programmed into it for whatever reason you felt the OEM wasn't doing that part of the job for you?
Last edited by Jackie Paper; May 15, 2022 at 06:26 AM.
Cruiser
Joined: May 2012
Posts: 146
Likes: 13
From: Kingston, NH
that's not how the ECM works. disconnecting the battery won't lose anything.
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Seasoned HDF Member
Joined: Mar 2010
Posts: 38,310
Likes: 6,328
From: Honah Lee
I'm not referring to Harley's OEM ECM. I am referring to aftermarket tuners. I have seen numerous times of them losing their loaded tune on here.
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Cruiser
Joined: May 2012
Posts: 146
Likes: 13
From: Kingston, NH
flash tuners (TTS, PV, direct link, SERT, SESPT, etc) program the OEM ECM. piggyback tuners (PCV, etc) don't. pretty sure the OP said he had a SE tuner.
Club Member
Joined: Jan 2022
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From: Ladner, B.C.
I’ve had the same code pop up a few times on my bike as well.
It’s going back to the dealer (under warranty) next week to track the cause down. After talking with a tech the ‘suspicion’ is a faulty O2 Sensor.
I recently did a stage 1 with SE tuner, Vance & Hines slip ons and the code came on the next day.
However the first time it happened was before the stage 1 work so I doubt the tuner has anything to do with the error coding.
It’s going back to the dealer (under warranty) next week to track the cause down. After talking with a tech the ‘suspicion’ is a faulty O2 Sensor.
I recently did a stage 1 with SE tuner, Vance & Hines slip ons and the code came on the next day.
However the first time it happened was before the stage 1 work so I doubt the tuner has anything to do with the error coding.