Engine-Codes - Ford - P0109 2002 FORD F150

P0109 2002 FORD F150 - BARO Sensor Circuit Intermittent

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3  What is this?
Table of contents

P0109 2002 FORD F150 Possible Causes

  • Faulty Manifold Absolute Pressure sensor
  • Loose electrical connection to BARO Sensor
  • Manifold Absolute Pressure harness is open or shorted
  • Manifold Absolute Pressure sensor circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How is the P0109 2002 FORD F150 code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Tech Notes

The sensor signal to the PCM is failing intermittently.
Check harness and connection.

What is the cost to diagnose the P0109 2002 FORD F150 code

Labor: 1.0

The cost to diagnose the P0109 2002 FORD F150 code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
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When is the code detected?

The sensor signal to the ECM is failing intermittently.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Engine rough idle
  • Engine hesitation

P0109 2002 FORD F150 Meaning

The Manifold Absolute Pressure (MAP) sensor provides instantaneous manifold pressure information to the engine's Engine Control Module (ECM). The data is used to calculate air density and determine the engine's air mass flow rate, which in turn determines the required fuel metering for optimum combustion. A fuel-injected engine may alternately use a Mass Air Flow (MAF) sensor to detect the intake airflow.

More Information

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