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If you run the engine for a long time without the sensor heated to its working temp it gets coated with a layer of soot/carbon just like the inside of your exhaust. Then when you eventualy power on the sensor heater this carbon deposits start burning off when it reaches over 500 C and this can dama...

Thanks for a very nice project. I have a question regarding the markings on the CJ125 chip. From the posted photos it seems that there exists at least two versions of the controller marked 30617 and 30481. Any idea if both of these comply to 2006 datasheet? Or are there any differences for example i...