CKP Sensor Synch Error EFI - Harley Davidson Forums: Harley Davidson Motorcycle Forum
Harley-DavidsonForums.com is an independent enthusiast website owned and operated by VerticalScope Inc. Harley-DavidsonForums.com is not sponsored by or in any way affiliated with Harley-Davidson Inc.. The Harley Davidson names and logos are trademarks owned by Harley-Davidson Inc.

Go Back   Harley Davidson Forums: Harley Davidson Motorcycle Forum > Technical > Engine

» Insurance
» Our Partners
»ATV Reviews
»Motorcycle Games
Reply
 
LinkBack Thread Tools Display Modes
Old 12-03-2012, 09:48 PM   #1 (permalink)
Acta Non Verba
 
Zelrick's Avatar
 
Join Date: Aug 2012
Location: Missouri
Posts: 1,730
CKP Sensor Synch Error EFI

I was on my way to work today and stopped off at Schlotzkys to get a Rubin. When I came out my bike, 2011 FXDF, cranked for several seconds and did not start. I cycled the ignition and it started, though reluctantly, it popped and hissed through the breather first (it's been doing that a lot lately) . I checked the DTC codes and came up with P0734 CPK sensor Synch Error EFI.

I've been fighting with the local dealership for 3 months now over excessive vibration, the they claim is "normal Dyna". Could the crank position sensor be causing it, yet not be throwing a code, till now?

I didn't clear the code and plan on taking it to another dealer, but it may be a few weeks before I can get it there, so another question is how dangerous to the engine is it? What are the chances of it leaving me stranded? (I remember the CPS went out on my old Eclipse and it was a catastrophe, motor made all kinds of unique and disturbing noises.)

Bike is a 2011 FXDF
Stage 1 with all SE parts
Tuned with a Power Vision from Fuelmoto.

The motor has been run 4 times since the original code popped with no reoccurrence.

Thanks for any help.


Sent from my Galaxy Nexus
__________________
.
Zelrick is online now   Reply With Quote Quick reply to this message
Old 12-04-2012, 06:43 AM   #2 (permalink)
Grandstanding Member
 
Dave63's Avatar
 
Join Date: Jun 2008
Location: PA
Posts: 29,816
You could pull the sensor yourself to check to see if there's a piece of dirt stuck to the end but the symptoms of the sensor going bad are usually different. I do believe its related perhaps in the plug or wiring. Leave the code, inspect the wiring and plug and do a "wiggle test" on the wiring and plug" with the bike running. Not sure if this is your vibration issued but it certainly needs to be addressed.
__________________
__________________________________________
“When the going gets weird, the weird turn professional....” ~ Hunter S. Thompson~

R.I.P. Rubberdown. 1971-2012
Dave63 is offline   Reply With Quote Quick reply to this message
Old 12-04-2012, 06:53 AM   #3 (permalink)
Retired citizen
 
SCHMIDTYS's Avatar
 
Join Date: Jun 2009
Location: Pt. Wash.,WI
Posts: 13,121
The CKP didn't set the code the ECM did. There's any number of things that will cause that code. What's happening is the CKP is miscounting the teeth on the left flywheel. A pop back out of the intake (backfire), a plug that fails to fire or any ignition glitch for one engine revolution can cause the CKP to miscount and then the ECM sets that code.
If everything else, plugs, wires etc. check out I would suspect the Power Vision.
__________________
Disclaimer : Don't believe anything I say unless you are absolutely sure that I know what I'm talking about .
SCHMIDTYS is offline   Reply With Quote Quick reply to this message
Old 12-04-2012, 06:56 AM   #4 (permalink)
Retired citizen
 
SCHMIDTYS's Avatar
 
Join Date: Jun 2009
Location: Pt. Wash.,WI
Posts: 13,121
One more thing, check the battery connections and voltage. Low B+ can cause ignition problems. Your battery should show at least 12.8v static.
__________________
Disclaimer : Don't believe anything I say unless you are absolutely sure that I know what I'm talking about .
SCHMIDTYS is offline   Reply With Quote Quick reply to this message
Old 12-04-2012, 07:06 AM   #5 (permalink)
Acta Non Verba
 
Zelrick's Avatar
 
Join Date: Aug 2012
Location: Missouri
Posts: 1,730
Thanks for the info guys. I'll get to checking things out.

Curious as to how it could be the Power Vision? All it does is allow me to flash tunes. I leave it on the bike as a gauge cluster to show RPM, engine temp and such.

Sent from my Galaxy Nexus
__________________
.
Zelrick is online now   Reply With Quote Quick reply to this message
Old 12-04-2012, 07:09 AM   #6 (permalink)
Retired citizen
 
SCHMIDTYS's Avatar
 
Join Date: Jun 2009
Location: Pt. Wash.,WI
Posts: 13,121
I was thinking the thing from FuelMoto was a fuel management system. So what kind of fuel management system is on your bike ???
__________________
Disclaimer : Don't believe anything I say unless you are absolutely sure that I know what I'm talking about .
SCHMIDTYS is offline   Reply With Quote Quick reply to this message
Old 12-04-2012, 07:51 AM   #7 (permalink)
Acta Non Verba
 
Zelrick's Avatar
 
Join Date: Aug 2012
Location: Missouri
Posts: 1,730
The Power Vision is a "tuner" but, like the SE tuner it flashes the ECM with the new tune and doesn't have to be left on the bike. I do leave mine on the bike because it's screen can be used like a gauge cluster.

http://www.dynojet.com/PowerVision/

Sent from my Galaxy Nexus
__________________
.
Zelrick is online now   Reply With Quote Quick reply to this message
Old 12-04-2012, 08:08 AM   #8 (permalink)
Retired citizen
 
SCHMIDTYS's Avatar
 
Join Date: Jun 2009
Location: Pt. Wash.,WI
Posts: 13,121
Gottcha. I just checked their website. I'm not real familiar with the Fuel Moto products. I wasn't aware H-D gave any aftermarket company access to their ECM programming.
Now if you would have said PCIII that would have raised a big red flag.
Again, the battery connections and static voltage would be suspect.
__________________
Disclaimer : Don't believe anything I say unless you are absolutely sure that I know what I'm talking about .
SCHMIDTYS is offline   Reply With Quote Quick reply to this message
Old 12-04-2012, 03:37 PM   #9 (permalink)
Acta Non Verba
 
Zelrick's Avatar
 
Join Date: Aug 2012
Location: Missouri
Posts: 1,730
Thanks again guys, off to work for now I'll get to investigating tomorrow.

Sent from my Galaxy Nexus
__________________
.
Zelrick is online now   Reply With Quote Quick reply to this message
Old 12-06-2012, 06:27 AM   #10 (permalink)
Acta Non Verba
 
Zelrick's Avatar
 
Join Date: Aug 2012
Location: Missouri
Posts: 1,730
Checked every thing and then some, all seems ok. So, and I called a different dealer and will be getting the bike there as soon as I can. It's still under warranty and hopefully these guys are better.

Sent from my Galaxy Nexus
__________________
.
Zelrick is online now   Reply With Quote Quick reply to this message
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Harley Davidson Forums: Harley Davidson Motorcycle Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Powered by vBadvanced CMPS v3.2.2

All times are GMT -5. The time now is 11:17 PM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.
This site is in no way affiliated with Harley-Davidson
Motorcycle News, Videos and Reviews
Honda Grom Forum Harley Davidson Forum Honda 600RR Forum Kawasaki Forum Yamaha R6 Forum Yamaha FZ-09 Forum
1199 Panigale Forum Roadglide Forum Honda CBR1000 Forum Vulcan Forum Yamaha R1 Forum Yamaha R3 Forum
Ducati Monster Forum Harley Forums Honda CBR250R Forum ZX10R Forum Star Raider Forum Yamaha Viking Forum
Suzuki GSXR Forum V-Rod Forums Honda Shadow Forum Kawasaki Motorcycle Forum Star Warrior Forum KTM Duke 390 Forum
SV650 Forum BMW S1000RR Forum Honda Fury Forum Kawasaki Versys Forum Drag Racing Forum Ducati 899 Panigale Forum
Suzuki V-Strom BMW K1600 Triumph Forum Victory Forums Sportbikes BMW NineT Forum
Volusia Forum BMW F800 Forum Triumph 675 Forum MV Agusta Forum HD Street Forum Suzuki GW250 Forum
Yamaha Motorcycles Victory Gunner Forum Honda Vultus Forum HD LiveWire Forum Ninja H2 Forum Ducati Scrambler Forum Kawasaki Ninja 250SL Forum