AutoCodes – Lincoln – P0443 Lincoln

P0443 Lincoln Code - EVAP Purge Control Circuit

Quick Answer

The Evaporative Emission System (EVAP) canister purge volume control solenoid valve uses a ON/OFF duty to control the flow rate of fuel vapor from the EVAP canister. Common causes include Faulty Evaporative Emission (EVAP) Purge Solenoid Control, Evaporative Emission (EVAP) Purge Solenoid Control harness is open or shorted, Evaporative Emission (EVAP) Purge Solenoid Control circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: P0443 Lincoln indicates EVAP Purge Control Circuit .
Common causes: Common causes include Faulty Evaporative Emission (EVAP) Purge Solenoid Control, Evaporative Emission (EVAP) Purge Solenoid Control harness is open or shorted, Evaporative Emission (EVAP) Purge Solenoid Control circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 4,060

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 30, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0443 Lincoln Description

The Evaporative Emission System (EVAP) canister purge volume control solenoid valve uses a ON/OFF duty to control the flow rate of fuel vapor from the EVAP canister. The EVAP canister purge volume control solenoid valve is moved by ON/OFF pulses from the Engine Control Module (ECM). The longer the ON pulse, the greater the amount of fuel vapor that will flow through the valve.

OBDII Code P0443 Lincoln - EVAP Purge Control Circuit - AutoCodes.com — P0443 Lincoln Code - EVAP Purge Control Circuit

What does this mean?

What are the Possible Causes of the DTC P0443 Lincoln?

Faulty Evaporative Emission (EVAP) Purge Solenoid Control
Evaporative Emission (EVAP) Purge Solenoid Control harness is open or shorted
Evaporative Emission (EVAP) Purge Solenoid Control circuit poor electrical connection

How to Fix the DTC P0443 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0443 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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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 P0443 Lincoln Code

1. What does the OBDII code P0443 mean on a Lincoln vehicle?

P0443 indicates an issue with the EVAP Purge Control Circuit, which regulates the purge valve responsible for controlling the flow of fuel vapors from the EVAP system to the engine.

2. What are the common symptoms of code P0443 in a Lincoln?

Symptoms may include a lit Check Engine Light, decreased fuel efficiency, difficulty starting the engine, or a noticeable fuel odor near the vehicle.

3. What causes the P0443 code in a Lincoln?

Common causes include a faulty purge valve, damaged wiring or connectors in the purge control circuit, a blown fuse, or a malfunctioning powertrain control module (PCM).

4. Can I drive my Lincoln with the P0443 code?

While the vehicle may still be drivable, prolonged operation with P0443 can lead to increased emissions and engine performance issues. It is best to address the problem promptly.

5. How do I diagnose the P0443 code on a Lincoln?

Start by inspecting the purge valve, wiring, and connectors for damage or corrosion. Use a multimeter to test the purge valve's resistance and check for proper voltage at the circuit.

6. How can I fix the P0443 code on my Lincoln?

Repairs might include replacing the EVAP purge valve, repairing damaged wiring or connectors, replacing a blown fuse, or reprogramming the PCM if necessary.

7. How much does it cost to fix the P0443 code on a Lincoln?

The repair cost varies but typically ranges from $100 to $300, depending on whether the purge valve needs replacement or if there are wiring issues.

8. Is the P0443 code related to a loose gas cap on a Lincoln?

No, P0443 is not directly related to a loose gas cap. It specifically pertains to an electrical issue within the EVAP purge control circuit.

9. How can I prevent the P0443 code from returning on my Lincoln?

Regularly inspect and maintain your EVAP system components, keep the wiring harness in good condition, and address any check engine light issues promptly.

10. Does the P0443 code affect emissions testing on a Lincoln?

Yes, the P0443 code can cause your vehicle to fail emissions testing since it impacts the EVAP system, which is designed to control fuel vapor emissions.