S2k P0720 error with new KManager

Boofster · Post by **Boofster** » Tue Nov 09, 2010 9:54 am

Using KPRO dual '06 S2000 spec.

I started throwing P0720 after I upgraded from 1.3.8 to 1.4.1
Is there an issue with this?

It happens randomly when going into idle. Normal is ~1000 rpm but it surges to about 1200, stays there for a second, throws the code, and drops back to 1000.

"P0720 Output Speed Sensor Circuit Malfunction (Transmission)"

Post by **Spunkster** » Tue Nov 09, 2010 10:48 am

post a high resolution and focused picture of the inside of the K-Pro ECU

Boofster · Post by **Boofster** » Tue Nov 09, 2010 10:28 pm

Here you go:
http://www.xtinct.com/Boofster_KPRO.jpg (3.2mb)

I checked with a buddy on s2ki.com with the same setup and he's having the same issue with the last software update. Throws the same code and all.

I can ask him to post here...

Post by **Spunkster** » Wed Nov 10, 2010 10:29 am

Also post a picture of the bottom of the circuit board witht he ECU removed from the case.

Boofster · Post by **Boofster** » Wed Nov 10, 2010 10:47 am

Spunkster wrote:Also post a picture of the bottom of the circuit board witht he ECU removed from the case.

I'll do it when I get home today. Are you looking for something that burned out? The box hasn't been touched since it came from you guys.

kb58 · Post by **kb58** » Wed Nov 10, 2010 11:00 am

They want to know the serial number of the board, and maybe the board rev.

Boofster · Post by **Boofster** » Wed Nov 10, 2010 9:18 pm

Here's the bottom of the board:
http://www.xtinct.com/Boofster_KPRO_bottom.jpg (3.3mb)

Post by **Spunkster** » Thu Nov 11, 2010 10:21 am

The error code you are getting is being generated from the stock ECU, not the K-Pro ECU. Neither the the K-Pro nor the software will not cause this. This is either a wiring problem or a sensor problem. THe K-Pro ECU has been modified properly for the dual harness.

Boofster · Post by **Boofster** » Fri Dec 03, 2010 4:28 pm

Sensor was replaced with new oem unit.

Problem is less frequent but still there. After random neutral shift, idle goes to normal, surges a little, throws code, and idle goes back to normal.

Also experienced by others:
http://www.s2ki.com/forums/index.php?showtopic=821586

Recently I found out some FlashPro users of the SOS superchargers are having deceleration revs going up by themselves. This could be the same issue. I am experiencing some surges while shifting at speed as well.

eternallx · Post by **eternallx** » Wed Mar 16, 2011 12:39 am

I've been told that you guys are now looking further into this issue... is this true?

Post by **Hondata** » Wed Mar 16, 2011 8:54 am

As per the post made Nov 11, the error code is from the S2000 ECU, and cannot be caused by a software update to the KPro.

Boofster · Post by **Boofster** » Fri May 06, 2011 10:38 am

Could this have something to do with the Parameters > Misc > Speed Sensor options?

Which checkbox should be clicked? What should the speedometer correction be set to?

S2k P0720 error with new KManager

S2k P0720 error with new KManager

Re: S2k P0720 error with new KManager