DTC P1548: Engine Air Filter Restriction
WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2011 Mercury Milan, 2011 Mercury Mariner, 2011 Mercury Grand Marquis, 2011 Lincoln Town Car, and 2011 Lincoln Navigator L. However, it is still accessible from the selected car via links, so may be relevant.
P1548 - ENGINE AIR FILTER RESTRICTION
| Description: | The powertrain control module (PCM) monitors the manifold absolute pressure at various engine speeds during wide open throttle (WOT) operation, and compares the information to a calibrated value. This DTC sets if the airflow is out of range. | ||
| Possible Causes: |
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| Diagnostic Aids: | If this DTC sets, inspect the intake air system and replace the air filter if no obstructions are found. Refer to the appropriate Intake Air Distribution and Filtering article for air filter replacement. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the Description, Possible Causes and Diagnostic Aids for the DTC in table. | ||