Why my WB reads one thing and y scanner another one?

My WB read 13.8 and on my VCM sacnner reads 14.8, its 1 point off,
even at WOT. I check another truck and it read fine I'm using hptuners, I calibrate the the WB and it still reads off.

 

The NGK wideband has a different offset equation than your typical wideband, because it only reads .6-1.1 lambda. At least true of mine with the real NGK sensor. If yours has the Bosch sensor it may be different.

 

Will check that tomorrow its been working fine and i have a NGK sensor laying around i should test that one, if i find it.

 

Yep, use the equation in the NGK manual.

 

you have to set the scanner up so that it matches the WB, they will most likely not match right out of the box. check your scanner manual to see where these settings are and check the WB manufacturers manual for the equation you need to put into the scanner