Pxxxx · Powertrain
P0100
Mass Air Flow (MAF) Circuit
ModeratePowertrain ECU
What it means
The ECM has detected an issue with the MAF sensor circuit. Voltage is either out of range or the signal is missing entirely.
Common causes
Listed in rough order of frequency. Verify with vehicle-specific service info before parts replacement.
- 01Dirty or contaminated MAF sensor element
- 02Disconnected or damaged MAF sensor wiring
- 03Vacuum leak downstream of the MAF sensor
- 04Faulty MAF sensor (replacement)
- 05Air filter restriction
Affected systems
ECUs and subsystems that report or are affected by this code.
Engine Control Module (ECM)Intake / fueling
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