K20A PRC swap O2 A/F wiring question

yellowle · Post by **yellowle** » Fri May 21, 2010 5:31 am

Hi
I have a JDM K20A (from a 02-05 integra) with a PRC ECU

I have purchased a O2 (or Air/Fuel sensor) sensor - its a wideband
Honda 36531-PRB-A01 ( I have the equivalent Denso 234-9005) as suggested.

Can anyone please tell me the wiring - it has 2 black wires (I presume heaters) 1 x blue wire and 1 x white wire (presume signal).

As stated I also am thinking white is sensor signal. This is going into a Lotus so I have no "socket" to plug into! so need to hard wire.

It is safe to presume
PHO2HTC+ goes to A22 white (sensor black wire 3rd pin and also switched by relay)
PHO2SHTC goes to A1 black/white (sensor black wire 4th pin)
PHO2S- goes to A16 red/yellow (blue wire 2nd pin)
PHO2S+ goes to A6 (white wire 1st pin)

I have gained this info from a RSX S manual.

I don't have this info at the moment as I was give the instructions that applied to a PRA from the UK.

I am in Australia - the conversion is now complete apart from this problem.

Currently the K-Pro is showing a P1166

Thanks

Post by **Hondata** » Fri May 21, 2010 7:50 am

For the wiring the Honda ETM manual has the pinout and colors for most connectors.

I would always recommend a Honda sensor from a DC5 or EP3 as many suppliers supply incorrect sensors - we've seen listings for the same sensor for the 02-04 and 05-06 RSX, where they actually use a different sensor. If you are using an aftermarket sensor then you should test it for several driving cycles in a DC5 or EP3.

P1166 is a heater error. Do you have the o2 sensor heater relay wired up correctly? Is the ECU energizing the relay correctly? Is the o2 sensor heater working?

yellowle · Post by **yellowle** » Fri May 21, 2010 8:24 am

Thanks
the part number 36531-PRB-A01 is listed on http://www.hondata.com/techk20-ctr-o2wiring.html - so I thought that was the right one.

Denso claimed Denso 234-9005 was an identical part.
I will have one last look at my options. If it doesn't work then I will need to purchase a 36531-PRB-A01.

Hey - great software by the way.

yellowle · Post by **yellowle** » Sat Jul 10, 2010 7:19 pm

yellowle wrote:Thanks
the part number 36531-PRB-A01 is listed on http://www.hondata.com/techk20-ctr-o2wiring.html - so I thought that was the right one.

Denso claimed Denso 234-9005 was an identical part.
I will have one last look at my options. If it doesn't work then I will need to purchase a 36531-PRB-A01.

Hey - great software by the way.

I have sorted the problem out - it was due to the blue and white wires being reversed - so the Denso DOES WORK WELL as a wideband.