AutoCodes – Lincoln – P1443 Lincoln

P1443 Lincoln 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 Lincoln 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 1,883

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 Lincoln 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 Lincoln - Evaporative Emission System Control Valve Low/No Flow - AutoCodes.com — P1443 Lincoln Code - Evaporative Emission System Control Valve Low/No Flow

What does this mean?

What are the Possible Causes of the DTC P1443 Lincoln?

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 Lincoln?

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 Lincoln 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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Get the P1443 Lincoln code diagnosed by a professional: Find a repair shop in your area

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 Lincoln Code

1. What are common symptoms of OBDII code P1443 in a Lincoln vehicle?

The common symptoms of OBDII code P1443 in a Lincoln vehicle may include the check engine light illuminating on the dashboard, decreased fuel efficiency, and potential issues with the vehicle's emissions system.

2. What does the OBDII code P1443 indicate in a Lincoln vehicle?

OBDII code P1443 in a Lincoln vehicle indicates a problem with the Evaporative Emission System Control Valve Low/No Flow, which is responsible for controlling the flow of fuel vapors from the fuel tank to the engine.

3. What are possible causes of OBDII code P1443 in a Lincoln vehicle?

Possible causes of OBDII code P1443 in a Lincoln vehicle include a faulty Evaporative Emission System Control Valve, a vacuum leak in the evaporative emission system, or a blockage in the system causing low or no flow.

4. How can I diagnose the OBDII code P1443 in my Lincoln vehicle?

Diagnosing OBDII code P1443 in a Lincoln vehicle involves using an OBDII scanner to retrieve the specific fault code, inspecting the Evaporative Emission System Control Valve and associated components for any visible damage or leaks, and checking for any blockages in the system.

5. What are some repair tips for fixing OBDII code P1443 in a Lincoln vehicle?

Repair tips for fixing OBDII code P1443 in a Lincoln vehicle may include replacing the Evaporative Emission System Control Valve if it is faulty, repairing any vacuum leaks in the system, and clearing any blockages to restore proper flow.

6. Can I continue driving my Lincoln with OBDII code P1443?

It is generally not recommended to continue driving a Lincoln vehicle with OBDII code P1443, as it can lead to decreased fuel efficiency and potential issues with the emissions system. It is best to address the problem promptly to prevent further damage.

7. How much does it cost to repair OBDII code P1443 in a Lincoln vehicle?

The cost to repair OBDII code P1443 in a Lincoln vehicle can vary depending on the specific cause of the issue, the extent of the repairs needed, and labor costs. It is advisable to consult with a professional mechanic for an accurate estimate.

8. Can OBDII code P1443 be triggered by a loose gas cap in a Lincoln vehicle?

While a loose gas cap can trigger the check engine light in a Lincoln vehicle, OBDII code P1443 specifically relates to issues with the Evaporative Emission System Control Valve Low/No Flow and is not directly related to a loose gas cap.

9. Are there any DIY solutions for fixing OBDII code P1443 in a Lincoln vehicle?

Depending on the cause of OBDII code P1443, some DIY solutions may include checking and tightening the connections in the evaporative emission system, inspecting for visible damage, and ensuring proper airflow in the system. However, more complex issues may require professional assistance.

10. How often does OBDII code P1443 occur in Lincoln vehicles?

OBDII code P1443 related to the Evaporative Emission System Control Valve Low/No Flow can occur in Lincoln vehicles, especially in older models or vehicles with high mileage. Regular maintenance and prompt attention to any warning lights can help prevent this code from occurring.