DTC P0101: Mass Air Flow (MAF) Sensor Circuit Performance Problem: Condition

DTC is set when intake air flow measured by MAF sensor does not agree with calculated intake air flow calculated by Powertrain Control Module (PCM) using manifold absolute pressure, barometric pressure and engine speed. MIL is illuminated when PCM detects malfunction during 2 consecutive drive cycles. Possible causes are:

• Plugged or leaking air intake system.
• MAF sensor malfunction.
• Manifold Absolute Pressure (MAP) sensor malfunction.
• PCM malfunction.