Hellen NA6 Wideband Issue

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Keith
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Joined: Thu May 27, 2021 1:13 am
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Hellen NA6 Wideband Issue

Post by Keith »

I have tried to use the internal wideband controller with no success. What I notice happening is that the sensor begins to heat as the car is started (flashing red LED), then will transition into operating normally (slower flashing red LED), then very quickly will error for an overheat (4 blue LED flashes).
I have tried multiple sensors, which all seem work with my spartan II. I tried to double check the wiring. I did inspect the board I found a solder blob at a resistor, which I cleaned. I lifted, cleaned up and resoldered the STM, it mostly looked good but I also reflowed a few parts. After all of that nothing changed.


I wired the sensor to the ECU in this config
image.png
image.png (5.63 KiB) Viewed 3233 times
And here is a log with debugging for the wideband selected.
https://www.rusefi.com/online/view.php?log=420
Attachments
WidebandLog.png
WidebandLog.png (45.58 KiB) Viewed 3233 times
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