PLX to Kpro V4

[pumadunk]

Hi, I have a PLX AFR gauge and module trying to hook up to a Kpro V4. I did all the wiring as instructed, grey from PLX to Kpro v4 analog 0 red wire. PLX grounded to same grounding point as the ecu. Right now, the ecu recognizes there is a widened connection, but the AFR reading on Kpro V4 is locked at 10.0 at idle, not following the PLX reading at all. Is this a wiring problem from PLX or is it a ground issue?

[Spunkster]

Where exactly are you getting power and ground for the wideband?

[pumadunk]

I’m getting power from ignition and grounding is to the location where the ecu grounds which is the engine. The gauge reads fine but not reading in Kpro

[Spunkster]

Have you checked the voltage of the output with a multimeter?

[pumadunk]

Not yet. But if the output wire to Kpro has power, then what other issues could it be?

[Spunkster]

You need to first see if the voltage matches what the PLX is reading on the display.

[pumadunk]

You mean check the Hondata display for voltage ?

[Spunkster]

No, you need to measure the output voltage of the PLX to see if it matches what it is showing.

[pumadunk]

I see, so you are referring to the equation (AFR-10)/2 right to get the voltage, and vice versa for the AFR. So if that matches, then what?

[Spunkster]

If it does not coincide with the reading then you need to contact PLX about what the problem might be with the wideband controller.