Hondata

Hi.
I have the plx device narrowband output wired up to the signal wire on the oem secondary o2 sensor (cut and soldered in). I keep getting mil p0137. Am I missing something. I'm tuned on flashpro.

You really can't use a simulated narrowband output from before the cat and allow that to be used after the cat as it will not show any difference which is what the ECU is looking for.

Ok thank you.