AutoCodes – Ford – P1443 1999 Ford F150

P1443 1999 Ford F150 Code - Evaporative Emission System Control Valve Low/No Flow

Quick Answer

The Powertrain Control Module (PCM) monitors the fuel tank pressure. Common causes include Loose fuel filler cap, Faulty EVAP Canister Purge Solenoid Valve, EVAP Canister Purge Solenoid Valve harness is open or shorted. 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: P1443 1999 Ford F150 indicates Evaporative Emission System Control Valve Low/No Flow.
Common causes: Common causes include Loose fuel filler cap, Faulty EVAP Canister Purge Solenoid Valve, EVAP Canister Purge Solenoid Valve harness is open or shorted.
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 2,702

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 06, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P1443 1999 Ford F150 Description

The Powertrain Control Module (PCM) monitors the fuel tank pressure. The Diagnostic Trouble Code (DTC) will set when the PCM detects a fuel tank pressure change greater than minus (-) 7 inches of water in 30 seconds occurred with a purge, fuel vapor, flow at less than 0.02 lb/min (0.15 gm/s).

OBDII Code P1443 1999 Ford F150 - Evaporative Emission System Control Valve Low/No Flow - AutoCodes.com — P1443 1999 Ford F150 Code - Evaporative Emission System Control Valve Low/No Flow

What does this mean?

What are the Possible Causes of the DTC P1443 1999 Ford F150?

Loose fuel filler cap
Faulty EVAP Canister Purge Solenoid Valve
EVAP Canister Purge Solenoid Valve harness is open or shorted
EVAP Canister Purge Solenoid Valve circuit poor electrical connection
Blocked hose between the purge valve and FTP sensor
Faulty EVAP Fuel Tank Pressure (FTP) Sensor

How to Fix the DTC P1443 1999 Ford F150?

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 does this mean?

Code Tech Notes

Check for blockages between the fuel tank, the EVAP Canister Purge Solenoid Valve, and the engine intake manifold. Check for obstructions in the EVAP Canister Purge Solenoid Valve diaphragm and ports.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1443 1999 Ford F150 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.

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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.

Frequently Asked Questions about P1443 1999 Ford F150 Code

1. What are the common symptoms of OBDII code P1443 in a 1999 Ford F150?

- Common symptoms include the check engine light coming on, rough idle, decreased fuel efficiency, and a noticeable gasoline smell.

2. What does the OBDII code P1443 in a 1999 Ford F150 indicate?

- The code P1443 indicates a problem with the Evaporative Emission System Control Valve Low/No Flow.

3. What are the possible causes of OBDII code P1443 in a 1999 Ford F150?

- Possible causes include a faulty evaporative emission control valve, a broken or disconnected vacuum line, a malfunctioning charcoal canister, or a loose gas cap.

4. How can I diagnose the OBDII code P1443 in my 1999 Ford F150?

- Diagnosing the code involves checking the integrity of the vacuum lines, inspecting the evaporative emission control valve, and testing the charcoal canister for leaks.

5. Can I still drive my 1999 Ford F150 with OBDII code P1443?

- It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to prevent further damage and reduce emissions.

6. How can I repair OBDII code P1443 in my 1999 Ford F150?

- Repairing the code may involve replacing the evaporative emission control valve, repairing or replacing damaged vacuum lines, checking and replacing the charcoal canister if necessary, and ensuring the gas cap is properly tightened.

7. Is it possible to reset the OBDII code P1443 in a 1999 Ford F150?

- Yes, the code can be reset using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes. However, it is important to address the underlying issue causing the code before resetting it.

8. How much does it cost to fix OBDII code P1443 in a 1999 Ford F150?

- The cost of fixing the code can vary depending on the specific issue, but it may range from $100 to $500 or more, including parts and labor.

9. Will OBDII code P1443 cause my 1999 Ford F150 to fail emissions testing?

- Yes, having this code present can cause your vehicle to fail emissions testing, as it indicates a problem with the evaporative emission control system.

10. How often does OBDII code P1443 occur in a 1999 Ford F150?

- This code can occur sporadically or more frequently depending on the condition of the vehicle's evaporative emission system. Regular maintenance can help prevent its occurrence.