OBDII Code P0100 Technical Data
Title
P0100 - Mass Air Flow (MAF) Circuit Malfunction
Definition
OBDII Code P0100 indicates a problem with the Mass Air Flow (MAF) sensor or circuit.
Symptoms
You will likely not notice any serious drivability problems, although there may be symptoms such as a general decrease in power or sluggishness.
Causes
An OBDII Code P0100 may mean that one or more of the following has happened:
The MAF may be disconnected, or a wiring connection may be bad
The MAF sensor may be faulty
Solutions
The simplest thing to do is to reset the OBDII Code P0100 and see if it comes back. Then start with the cheapest, easiest repair procedures:
Verify that the Mass Air Flow Sensor wiring is connected properly and that there are no broken / frayed wires.
Unplug and reconnect the MAF wiring harness
Check the voltage of the MAF sensor (refer to a repair manual for vehicle specific information)
Replace the MAF sensor