Engine-Codes - Ford - P144A FORD

P144A FORD - Evaporative Emission System Purge Vapor Line Restricted/Blocked

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

P144A FORD Possible Causes

  • Faulty Evaporative Emission System Purge Valve
  • Evaporative Emission System Purge Valve harness is open or shorted
  • Evaporative Emission System Purge Valve circuit poor electrical connection
  • Blocked fuel vapor tube between the Fuel Tank Pressure (FTP) sensor and the fuel tank

How is the P144A FORD 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

There are Factory Service Bulletins for the following Ford models:

2010-2011 Ford Fusion
2009-2011 Ford Escape
Ford Fusion, Escape Factory Service Bulletin OBDII Code P144A

2009-2010 Ford F-150
2009-2011 Ford E-150
2009-2011 Ford E-250
2009-2011 Ford E-350
2009-2011 Ford E-450
2009-2011 Ford Expedition
2011 Ford F-250
2011 Ford F-35
Ford Factory Service Bulletin OBDII Code P144A









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What is the cost to diagnose the P144A FORD code

Labor: 1.0

The cost to diagnose the P144A FORD code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

When is the code detected?

If the intrusive test confirms a blockage a counter is incremented and once the counter reaches a calibrated number of completions, the P144A code is set

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P144A FORD Meaning

The Powertrain Control Module (PCM) monitors the Evaporative Emission (EVAP) system for a blocked fuel vapor tube between the Fuel Tank Pressure (FTP) sensor and the fuel tank. During the initial phase of the EVAP monitor, the PCM closes the canister vent and a vacuum develops in the fuel vapor tubes and lines and in the fuel tank. The PCM monitors the FTP sensor to determine the amount of vacuum and how quickly the vacuum increases. The rate at which the vacuum increases is compared to an expected value. If the vacuum increases quicker than expected, a blocked fuel vapor tube is suspected and an intrusive test is carried out in the final phase of the EVAP monitor.

More Information

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