Hello.
Have emu black and im trying to make lambda sensor to work but i have no luck so far.
Sensor is Bosch lsu 4.9 and i did try a second one i have and still shows lambda 1.01 constant.
I double check wiring, I put 150k resistor between 5v and wbo vs.
I see on analog input 3 there is assigned external controller input but I have not assigned that and I cannot get rid of it.
That is very strange…for me it seems u just simply have a external controller choosen there.
I would try to set up a new project or use the option “restore to default” in the WBO section and see if external analog 3 is gone then. Maybe u found a strange SW bug^^
What i noticed is when u choose external controller and switch back to wideband…the selected analog input for external controller stays assigend.
So maybe set external cintroller…set the input to none and then switch back to wideband.
yeah this is an annoying thing I find in a lot of basemaps, but once you’ve seen it before you know how to fix it.
If its not set to an external wideband input then its referencing the onboard controller.
Looking at the log something is wrong, I think it may be wiring… like 2 pins are swapped.
You’re sure its a 4.9 LSU and wired as one? Lots of people read the ecu side pinout backwards
Here is what it should look like, notice how the RI and VS are pretty stable and the IP mA is whats leading the O2 reading? yours looks like IP is swapped with another pin.
Use the preset for ‘WBO’ on the graphlog, and I also add the channel ‘lambda is valid’ to see if the ecu has determined lambda to be ready to use. typically this is true once the warm up cycle is complete (can see in the heater DC), but on your log its flipping true/false/true etc so the ECU recognizes something isnt right
I check again the wiring and everything seems to be good.
I see in your log wbo ri is around 0.78 and mine is stuck at 2.49 volts.
What does that mean?
Also wbo ip after you sensor heats up it starts to fluctuates which is normal but mine stays at 0 mA.
So guys I make new wiring from ecu but I didn’t put connector on the sensor side.
I just put the pins directly in the male connector of the sensor.
Everything works like normal, so something is wrong with the female plug it self because the pins are well crimped.
It’s the first time I’m facing something like that.
I check multiple times the wiring and the pins and everything was perfect.
Glad you found it! i’d say 95% of WBO related issues have been wiring, this however is a new one.
Perhaps its simply not inserted all the way in? there’s a purple lock that has to be open to get the pin in position
I have tons of 4.9 LSU connectors if you need more, just visit HangTight.io or email me.
Pins are all the way in and locked with the purple lock.
I try to pull the wires with all of my power and none of them get out.
It’s like the hole on the female pins it’s too big for the male pins on the sensor.
I have another connector which i bought together, I will try that and see how it goes.
