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My car is showing an check engine code for a MAF or oxygen sensor failure

Problem: My car is showing an check engine code for a MAF or oxygen sensor failure. The engine produces exhaust that smells.

WARNING WARNING WARNING

Operating your engine with a failed MAF, oxygen sensors, and the like will have the car computer resort to GUESSING AND WILL ALWAYS OPERATE TOO RICH. This will produce poisonous exhaust, but more importantly IT WILL DUMP UNBURNED GASOLINE IN THE EXHAUST, WHERE IT WILL BE BURNED BY THE CATALYTIC CONVERTER, MAKING THE CATALYTIC CONVERTER TOO HOT. CONTINUING TO OPERATE THE CAR ON A RICH MIXTURE WILL IRREVERSIBLY RUIN THE VERY EXPENSIVE CATALYTIC CONVERTER.

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