DTC P1100: Mass Air Flow (MAF) Sensor Circuit Intermittent

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P1100 - MASS AIR FLOW (MAF) SENSOR CIRCUIT INTERMITTENT

Description:	The MAF sensor circuit is monitored by the powertrain control module (PCM) for sudden voltage (or airflow) input change through the comprehensive component monitor (CCM). If during the last 40 warm-up cycles in key on, engine running (KOER) the PCM detects a voltage (or airflow) change beyond the minimum or maximum calibrated limit, a continuous memory DTC is stored.
Possible Causes:	Poor continuity through the MAF sensor connectors Poor continuity through the MAF sensor harness Intermittent open or short inside the MAF sensor.
Diagnostic Aids:	While accessing the MAF V PID on the diagnostic tool, lightly tap on the MAF sensor or wiggle the MAF sensor connector and harness. If the MAF V PID suddenly changes below 0.23 volt or above 4.60 volts, an intermittent fault is indicated.
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
All	GO to DC: Mass Air Flow (MAF) Sensor STEP DC18.