P0103: Mass Air Flow (MAF) Circuit High Input
WARNING: This page does not describe the selected car, but rather 30 other vehicles, including the 2004 Mercury Sable, 2004 Mercury Mountaineer, 2004 Mercury Monterey, 2004 Mercury Marauder, and 2004 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.
P0103 - MASS AIR FLOW (MAF) CIRCUIT HIGH INPUT
| Description: | The MAF sensor circuit is monitored by the PCM for high air flow (or voltage) input through the comprehensive component monitor (CCM). If during key ON, engine OFF, or key ON, engine running, the air flow (or voltage) changes above a maximum calibrated limit, the test fails. | ||
| Possible Causes: |
|
||
| Diagnostic Aids: | A MAF V PID (MAF PID) reading less than 4.6 volts in continuous memory or key ON, engine running indicates a hard fault. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST DC: MASS AIR FLOW SENSOR Step 19. | ||