Hondata

Have you got any ideas what the problem might be ?

No using a narrowband but also have a standalone PLX wideband not connected to the ecu just to check readings. Is there anyway in K-manager to manually switch the heater relay to check operation at pin E8 as at present pin E8 isn't doing anything.


Thanks
Matt

I have unwired the o2 sensor from the k-tuned harness (the k-tuned harness was incorrect) and wired it to your diagram(https://www.hondata.com/tech-k20-swap-wiring), am I right in thinking that pin E8 should pull to ground?

Having problems with the primary o2 sensor, using a K-tuned wiring harness, UK ep3 type r engine harness in a UK Dc2 Integra, Kpro 3 ecu.
I have changed the wires for UK narrowband, pinout as follows: pho2s+ ecu A6, pho2s- ecu A16 , phoshtc+ ecu A22 and 02 heater relay pin 87 , pho2shtc ecu A1 , pin ...