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Huh??? Narrowband O2-sensors are passive devices. They self-generate 0-1v signal in tiny 1.5ma range. Even ones with heaters (which Ecotrons doesn’t use) require only 15-24w depending upon controller.
There’s also a difference between closed-loop feedback versus closed-loop “learning” or “auto-tune”. I suspect it’s this auto-tune feature that’s changed idle-fuel map into an unstable state. Turning off that feature and use simple closed-loop running off map without adjustments will be much more stable.
Unplugging O2-sensor is simple troubleshooting step. Even better is to monitor its output signal with oscilloscope to see what it’s actually sending to the ECU.
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