O2 sensor not reading values (P0131/P0135 errors)

[Itsuki]

Hi,

I've installed a KPro in a Euro EP3 in a PNF ECU.

First of all, I erased the ECU to start a new fresh calibration. I've selected a base calibration for the Euro CTR-PRA (I'm doing this AFAIK that for Euro CTR is better to choose that kal instead the PNF ECU. The only problem is the reverse gear matter), and I'm seeing always that the O2 sensor is not reading any voltage.

The car hasn't any external wideband, and the O2 sensor is brand new. We are reading the error code P0135, and if I disabled it from the closed loop menu, appears the error code P0131.

Also, if I return to my stock ECU without the KPro, with the new O2 sensor, the error doesn't appear. Only with the KPro.

I've attached a datalog.

Any advice?

[Hondata]

A PNF ECU uses a wideband o2 sensor. The Euro vehicle uses a narrowband with different wiring.

[Itsuki]

Thanks for the reply!

Any idea on the diagram wiring to make it work?

[Spunkster]

https://www.hondata.com/tech-euro-ctr-wideband

[iwo]

Hi All,

I have the same issue with the car. Could somebody check my readings from the attachment please? I disabled P0135 and then P0131 came up. I did not tune the car. There are many changes done to it. It is mapped without cat. I have put cat back for the upcoming test and need to have them errors fixed. The same error was there before putting cat back. Plugs are connected. I have not checked each wire. I am hoping that somebody could see something from the attachment maybe?

last changes.kal

(163.07 KiB) Downloaded 155 times

Kind Regards,
Iwo

[Spunkster]

Why are you trying to run a PRA calibration in a PNF ECU? You will be much better off just using a PNF or PRB calibration.

[iwo]

Thanks. Will it be OK if I paste log when running the engine? Will you be able to see potential issue on the sensor?
Kind Regards,
Iwo

[K-twenee-EG]

Hello,

I'll be doing a K-swap soon. I've got the K20A2 swap from a UK EP3 and I want to put it in a Civic EG.
I want to use the wideband O2, so I got the PRB ecu (KPRO v3) + 36531-PRB-A01 sensor.

Can someone please help me with the necessary wire changes?
Should I follow this guide https://www.hondata.com/tech-euro-ctr-o2-wiring
or the one posted in this thread https://www.hondata.com/tech-euro-ctr-wideband?
Or are they the same? I'm a little confused.

Also, I still need a conversion harness, right?

[Rrems8]

Thanks for the reply!

Any idea on the diagram wiring to make it work?

Hi itsuki

I have same issue with my just installed kpro un UK ctr.

Have you resolved this trouble code?
Thx