DTC P1100: Mass Air Flow (MAF) Sensor Circuit Intermittent
WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2005 Mercury Sable, 2005 Mercury Mountaineer, 2005 Mercury Monterey, 2005 Mercury Montego, and 2005 Mercury Mariner. However, it is still accessible from the selected car via links, so may be relevant.
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: |
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| 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. | ||