P144A FORD - Evaporative Emission System Purge Vapor Line Restricted/Blocked
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
First diagnose P144A FORD code
Check 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 terminals.
P144A FORD Tech NotesThere is a factory service bulletin for the following Ford models:
2010-2011 Ford Fusion
2009-2011 Ford Escape
Ford Factory Service Bulletin OBDII Code P144A
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Cost of diagnosing the P144A FORD code
Labor: 1.0The cost of diagnosing 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 P144A FORD 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
P144A FORD Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P144A FORD MeaningThe 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.
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