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
And here is a log with debugging for the wideband selected.
This means Hellen
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