Too vague. ALL vehicle questions MUST have
year make model
Google
year make model code 44 error
Error Code 44
is caused when the program that you are using shuts down the peripheral device installed on your system. It is triggered by the following: ... Device driver files are outdated. Device driver files are missing.
Did you actually have an error code for the O2 sensor?
You have a fuel delivery issue
Clean Throttle Body
Clean MAF mass air flow sensor
Clean the injectors
Fuel Air Sensor is the one that regulates fuel to injector and is on the exhaust manifold. The O2 sensor checks what's left after the Catalytic converter to make sure the unburnt hydrocarbons have been used up for emissions purposes
It's all in the Codes, but Error 44 has no context without the vehicle it came from.
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