Upstream downstream Honda lambda

[Bertsail]

Got a check engine light.
Wipp out the Chinese scan tool for the first time in anger, works very well.
P0141 Eric has a video of this one, O2 sensor heater bank 1 sensor 2. Figure out this is the downstream after the cat, under the car no resistance on the black wires need a new one.
Look on the Honda parts program I have and I will be looking at 250 to 300€ :ohmy:
Online to try to find an after market one and lots of confusion over the downstream bit.
Honda have two different part numbers but it seems that the only real difference is the cable.
Finaly got a Bosch universal one that I will have to swap the original four wire cable to.
Hopefully this is right and there is no difference in the threads and fitting length.
Oh the car is an HRV Honda but the engine is a 1.6 16V and must be the same as a 2000 year Civic in layout.
Any thoughts on this as it may confuse a lot of people. 😉

Topic

[college man]

If you do cut and use the connector and wiring.solder
and heat shrink all the wires.

[Bertsail]

Thanks for the reply.
I have a Bosch universal for 100€ and a no brand EBAY find for 50€ in the post.
Now I was thinking the best connection would be solder. But I was looking at an instalation PDF from Bosch and the say to not solder.

I then found this with Google :-

(Wires you can solder- the heaters.

Wires you should not solder- the main signal and the reference line. Why? As odd as it sounds, that’s where the sensor gets air into the thimble so that it can act as a battery. Why not a hole near the sensor? It’s not generally a great location- easy to plug up, make a mess of.)

So 😉 best use the crimps that come with it I think.

[Bertsail]

Ok the Ebay Lambda arrived fist followed one hour later by the Bosch.
Fitted the Ebay one (Thomson from Brasil) with the supply’d crimps and heat shrink, cleared the code, started car, same code P0141 came back :sick:
Check resistance on the heater wires 6 ohms.
Look at Erics video he got 16 ohms.
By now the Bosch has arrived it has 10.5 ohms.
Fit the Bosch with its funny screw connecters no more code 😛

http://www.boschautoparts.com/BAP_Technical_Resources%2FOxygen%20Sensors%2FO2InstallGDWEB09.pdf

Think I answerd my own question now. Basicly the o2 sensors are the same, some newer cars from 2005 on may have a wide band sensor but they have more than 4 wires normaly 6.
The heater resistance is important and for Hondas it seems to be from 10 to 15 ohms.
My car is a bit odd as there are not a lot out there so its not so easy to find after market stuff but with a Civic or something it will be easyer for sure.
The Honda prices on this are over the top so after market is the way to go but best stay with a known brand.
Stay clean :dry: sorry dirty 😆

[Bertsail]

Oh and the wires are made out of steel so the solder will not stick. They must do this because of the heat, but I think there must be something with the oxygen down the wire thing, or through the plastic insulation, as Bosch say to leave a minimum of 13 cm of original wire out the back of the sensor.

[Author]

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