AutoCodes – Ford – P1548 Ford

P1548 Ford Code - Engine Air Filter Restriction

Quick Answer

The Powertrain Control Module (PCM) monitors the Manifold Absolute Pressure (MAP) at various engine speeds during Wide Open Throttle (WOT) operation and compares the information to a calibrated value. Common causes include Intake Air restriction, Clogged Air Filter. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P1548 Ford indicates Engine Air Filter Restriction.
Common causes: Common causes include Intake Air restriction, Clogged Air Filter.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 25,543

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 29, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P1548 Ford Description

OBDII Code P1548 Ford - Engine Air Filter Restriction - AutoCodes.com — P1548 Ford Code - Engine Air Filter Restriction

What does this mean?

What are the Possible Causes of the DTC P1548 Ford?

Intake Air restriction
Clogged Air Filter

How to Fix the DTC P1548 Ford?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1548 Ford code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1548 Ford code?

Need more information on how to fix the P1548 Ford code? Get Access to Factory Service Manuals

Need Help with the Code?

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Information for Specific Ford Models

P1548 2006 Ford Fusion — Engine Air Filter Restriction
P1548 2007 Ford Fusion — Engine Air Filter Restriction
P1548 2008 Ford Fusion — Engine Air Filter Restriction
P1548 2009 Ford Fusion — Engine Air Filter Restriction
P1548 2010 Ford Fusion — Engine Air Filter Restriction
P1548 2011 Ford Fusion — Engine Air Filter Restriction
P1548 2012 Ford Fusion — Engine Air Filter Restriction

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.