Can't get higher O2 value than 16.9

[NitroX5]

Firmware 1.1.74, 3.6 board
WBO is brand new: LSU 7 057

Wideband "software" config has got from Bob's guide.
The hardware configuration process successfully executed.
       Pump Zero: 0.1V (value 101)
       Nernst DC target: 0.45V (value 136)  //Gnd& Pin5 is 4.1//
---------------Perfect-----------------

...then the free air calibration is not. Heatup is working (E4), O2 reading comes after a while, but even with the max cal. value(255), it only give 16.9 oxygen reading. WFT???
What could be the problem?

       

[mattias]

Heatup is working (E4)

After a couple of minutes of heating, is the sensor tip _really_ hot ?
If it's stone cold, go look for the obvious mis-wiring issues.

[NitroX5]

Really hot, I cant touch it. After couple of minutes the whole case is hot, so it is working fine.

[mattias]

Try another sensor and if that doesn't work, check all the wiring again.

[NitroX5]

Try another sensor and if that doesn't work, check all the wiring again.

Another sensor has been tried out. It was a brand new LSU 4.0 6066, issue is the same :(

[mattias]

Check that your using the correct default settings for the WBO2 controller.

[NitroX5]

Ok, I found the problem: after measuring Volts again, it tuned out the Nerst pin was connected to EC18 pin 1 :S
Confused the #1 at wbo and on the board as well.

So now it's working, thanks for help.
//similar problem at a sweden guy, but only with 12V power: http://www.vems.se/forum/viewtopic.php?f=4&t=869 //