B18b1 pr4-3 head p75a01 in my ef sedan
getting a code 41 even after disconnecting the battery and installing a new $60 Bosch o2 sensor.
does the o2 sensors have to be broken in?
someone mentioned imitating it with a resistor?
resistors come in a million different sizes. Which would I use?
ill skip that and swap out another p75
anything else I should try?
also how many o2’s should I see?

 

No they don't need to be broken in! Try a OEM sensor!

halfway down is the factory service manual troubleshooting guide for that code;

https://honda-tech.com/forums/hybrid...rk%22-1812135/
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These pages apply


Testing gave me a yes and yes here. Honda discontinued the o2 sensor and after market is the only option they told me at Honda. The Bosch o2 tests good.

no no no yes here

I already got another p75 to test and actually they both passed the smell test so I’m going to go with an open in the orange and black wire from the o2 to the ecu but before I do I want to show you what information I’ve gathered to help give visual maybe it’s two wires out of place idk have a look

 

Here what I’m working with


A6 and a25 reference

D14 and d22 reference

 

did a lot of continuing testing. On the left the These are the coordinated color of the wires at the ecu harness and the end pin location to the p75 is in red. The pin locations in white are where they in turn go to the conversion harness on the obd0 side. On the right is a grey square representing the harness side on the o2 plug And where continuity is to the end of the engine harness. The colors used are not the Actual colors. Those colors are what they should be according to the obd1 pin out I posted before

 

Here are the actual colors that they. When I gets into the cabin to the ecu they are gray yellow brown and purple
b1 splices and goes to a13 & a15 on the obd0 side and is spliced a fourth time going to a26 on the p75 but there is no continuity