Intermittent P1356
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Intermediate
Joined: Oct 2007
Posts: 32
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Intermittent P1356
04 FLHRSI with SE 95", heads, 257 cam, intake and D&D 2-1. Did a 300 mile ride Saturday and the bike ran great, but the CEL kept coming on when climbing gradual hills. I pulled the code when I got home and it was a P1356, rear cylinder misfire. I did not feel any miss, the power was smooth and strong, normally a miss is very evident on a twin. The light comes on pulling a hill or accelerating, usually over 55mph. I pulled the plug out and checked it, cleaned some of the anti-seize off and made sure the boot was connected good, still getting the light. Got screamin eagle plugs in it. The bike seems to have a pretty good tune on it, has some decal pop, but not very loud, I assume some of that may be from the cam overlap. Any ideas?
Seasoned HDF Member
Joined: Jan 2006
Posts: 11,463
Likes: 2,990
From: Charleston, SC
Plug, plug wire, or coil. About the only things that affect ion-sense - which throws that code.
Go hand over hand on the plug wire to ensure it's in good shape and pull the boot at the coil to make sure it's not rusty or full of water.
Beyond those simple checks, might be time to start changing those three things out starting with the plug.
Go hand over hand on the plug wire to ensure it's in good shape and pull the boot at the coil to make sure it's not rusty or full of water.
Beyond those simple checks, might be time to start changing those three things out starting with the plug.
Grand HDF Member
Joined: Dec 2007
Posts: 4,999
Likes: 55
From: Bay Area
Stay with stock HD plugs and wires. Some may swear by other brands but any GOOD tuner or builder will only recommend oem ones, theres a reason for this and the resistance values are correct with OEM.
Road Warrior
Joined: Jun 2014
Posts: 1,745
Likes: 36
From: Lafayette La
https://www.hdforums.com/forum/ignit...ally-mean.html
This probably has nothing to do with your issue, but I found the link above interesting maybe worth the read. The year modles are close to the same. Good luck with your issue.
This probably has nothing to do with your issue, but I found the link above interesting maybe worth the read. The year modles are close to the same. Good luck with your issue.
Seasoned HDF Member
Joined: Jan 2013
Posts: 10,637
Likes: 1,246
From: Lake, Ms
Have also read where a pin hole in the fuel line inside the tank can cause this issue as well.
2010 Limited with some stuff
2010 Limited with some stuff
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Seasoned HDF Member
Joined: Nov 2006
Posts: 5,878
Likes: 1,894
From: East Coast, USA
Yes, this happened to me. Check fuel pressure.
see:
https://www.hdforums.com/forum/touri...ml#post9200215
see:
https://www.hdforums.com/forum/touri...ml#post9200215
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