hey , so my gp t jet got a check engine on and it was a oxygene sensor after catalytic is bad so i want to know what the ecu do when a probleme like that is found , because i feel a less power on the engine

When it loose information from a sensor, the ECU uses fixed values to run the engine, the result is a lack of power AKA "limp mode".

By the way, nice presentation!

BRs, Bernie

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