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37820-PRC-013 Wideband O2 issues

Posted: Tue Aug 03, 2021 8:56 pm
by Hex
Hi

Need some guidance to get factory wideband working.

2005 Accord JDM CL7 K20A
ECU is 37820-PRC-013
Hondata info: Serial 10021, Firmware: 3.00, Software 4.4.60, ECU type: PRB - US RSX Type S

Currently there is no change in the Primary O2 current and the AF does not move.

* We have continuity traced all the O2 sensor wires / pins, they seem to be fine. Signal goes to A6, signal ground to A16 and there is heater voltage and
ground.
* We have fitted a new genuine sensor.
* Parameter menu, radio button set to "Built in wideband"

Anyone got any ideas?

Thanks

Re: 37820-PRC-013 Wideband O2 issues

Posted: Wed Aug 04, 2021 10:01 am
by Spunkster
You need to try the ECU in a known working vehicle.

The K-Pro is not supported in an Accord.

Re: 37820-PRC-013 Wideband O2 issues

Posted: Wed Aug 04, 2021 2:35 pm
by Hex
Hi

Thanks for your reply. This is using an adapter loom (hence why we checked the pin continuity), and everything else works fine. As far as I can tell the O2 sensor is the correct one for the ECU. Any other ideas?

Re: 37820-PRC-013 Wideband O2 issues

Posted: Wed Aug 04, 2021 4:37 pm
by Spunkster
No, you need to try it in a known working vehicle.

Re: 37820-PRC-013 Wideband O2 issues

Posted: Wed Aug 04, 2021 5:45 pm
by Hex
ok thanks

Re: 37820-PRC-013 Wideband O2 issues

Posted: Sun Aug 08, 2021 2:23 pm
by Hex
Can't get a test vehicle. Can we send you this ECU? Must be some kind of plan b?

Re: 37820-PRC-013 Wideband O2 issues

Posted: Mon Aug 16, 2021 4:21 pm
by Spunkster
Where are you located?