P0151H error code lights check engine?
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6th Gear
Joined: Jul 2018
Posts: 13
Likes: 10
From: FL
P0151H error code lights check engine?
After a service visit a few months ago, they updated the bikes firmware. Now, error code p0151h illuminates the check engine light--there are no other codes present. It's happened 3 times in 3 months. I do have a stage 1 with Rineharts, tuned on local dealers dyno. I clearly remember that p0151h would not light up the check engine light by itself, if it was the only code present. Anybody know if there is a later update that keeps the old p0151h "silent", like it used to be? I plan on bringing it in next week when I get a chance. Bike is running great, it is a 2018 Heritage Classic.
Last edited by mcriderfl; Jul 4, 2018 at 02:52 PM. Reason: forget year and model
Ultimate HDF Member
Joined: Nov 2016
Posts: 6,697
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From: Stuart, Fl
That’s a code for O2 sensor code that needs to be cleared out they can be intermittent and pop up a lot. Who ever worked on it last may did something wrong check all your fittings to insure there all connected properly.
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6th Gear
Joined: Jul 2018
Posts: 13
Likes: 10
From: FL
Update dealer says they fixed
Picked up bike this morning, dealer says rear oxygen sensor replaced with one they had to take off a new bike, as Harley and nearby dealers were out of stock. They re-tuned on their dyno, and I can tell the rear-most muffler was moved slightly forward and now meets exactly where the header heat shield stops (there was a tiny gap before), although they said nothing about this. All seems well so far, but I will have to ride it for a longer time and take a more distant trip to be sure. Nobody there knew whether or not the p0151h code by itself used to not light the check engine light in the past.
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Andy from Sandy
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Mar 25, 2019 11:26 AM
