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

P1100 - MASS AIR FLOW (MAF) SENSOR CIRCUIT INTERMITTENT

Description:  The MAF sensor circuit is monitored by the PCM for sudden voltage (or airflow) input change through the comprehensive component monitor (CCM). If during the last 40 warm-up cycles in ignition ON, engine running the PCM detects a voltage (or airflow) change beyond the minimum or maximum calibrated limit, a continuous memory DTC is stored.
Possible Causes: 
  • Incorrect continuity through the MAF sensor harness or connector
  • Intermittent open or short inside the MAF sensor
Diagnostic Aids:  While accessing the MAF PID on the scan tool, lightly tap on the MAF sensor or wiggle the MAF sensor connector and harness. If the MAF 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 PINPOINT TEST DC .
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