DTC P0103: Mass or Volume Air Flow A Circuit High Input
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.
P0103 - MASS OR VOLUME AIR FLOW A CIRCUIT HIGH INPUT
| Description: | The mass air flow (MAF) sensor circuit is monitored by the powertrain control module (PCM) for high air flow (or voltage) input through the comprehensive component monitor (CCM). If during key on, engine off (KOEO), or key on, engine running (KOER), the air flow (or voltage) changes above a maximum calibrated limit, the test fails. | ||
| Possible Causes: |
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| Diagnostic Aids: | A MAF V PID (MAF PID) reading greater than 4.6 volts during KOER indicates a hard fault. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to DC: Mass Air Flow (MAF) Sensor STEP DC20. | ||