AutoCodes – Ford – P0443 1998 Ford F150

P0443 1998 Ford F150 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 1998 Ford F150 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 5,625

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 Jun 14, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0443 1998 Ford F150 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 ECM. The longer the ON pulse, the greater the amount of fuel vapor that will flow through the valve.

OBDII Code P0443 1998 Ford F150 - EVAP Purge Control Circuit - AutoCodes.com — P0443 1998 Ford F150 Code - EVAP Purge Control Circuit

What does this mean?

What are the Possible Causes of the DTC P0443 1998 Ford F150?

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
Damaged PCM

How to Fix the DTC P0443 1998 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

The PCM monitors the state of the EVAP canister purge valve circuit output driver. The test fails when the signal moves outside the minimum or maximum limit for the commanded state.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0443 1998 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 P0443 1998 Ford F150 Code

1. What does the OBDII code P0443 on a 1998 Ford F150 indicate?

The P0443 code on a 1998 Ford F150 signifies a problem with the EVAP purge control circuit.

2. What are the common symptoms of a P0443 OBDII code on a Ford F150?

Common symptoms of a P0443 code may include rough idling, decreased fuel efficiency, and the illumination of the check engine light.

3. What are the possible causes of a P0443 OBDII code on a 1998 Ford F150?

Potential causes of a P0443 code include a faulty purge control solenoid, damaged wiring in the purge control circuit, or a defective powertrain control module (PCM).

4. How can I diagnose the cause of a P0443 OBDII code on my 1998 Ford F150?

To diagnose a P0443 code, you can perform a visual inspection of the EVAP system components, test the purge control solenoid, check for wiring issues, and scan the PCM for any related fault codes.

5. Can I still drive my 1998 Ford F150 with a P0443 OBDII code?

It is generally safe to drive your Ford F150 with a P0443 code, but it is recommended to address the issue promptly to prevent potential damage to other components and ensure optimal vehicle performance.

6. How can I repair a P0443 OBDII code on my 1998 Ford F150?

Repairing a P0443 code may involve replacing the purge control solenoid, repairing damaged wiring, or reprogramming or replacing the PCM if necessary.

7. Are there any DIY tips for fixing a P0443 OBDII code on a Ford F150?

DIY tips for addressing a P0443 code include checking for loose or damaged connections, testing the purge control solenoid with a multimeter, and clearing the code with an OBDII scanner after completing repairs.

8. Will a P0443 OBDII code on a 1998 Ford F150 affect the vehicle's emissions performance?

Yes, a P0443 code can impact the vehicle's emissions performance by causing increased emissions of harmful gases and potentially failing an emissions test.

9. How long does it typically take to repair a P0443 OBDII code on a 1998 Ford F150?

The time needed to repair a P0443 code varies depending on the exact cause of the issue, but it can typically be resolved within a few hours to a day by a qualified mechanic.

10. What is the average cost to fix a P0443 OBDII code on a 1998 Ford F150?

The average cost to repair a P0443 code on a 1998 Ford F150 ranges from $100 to $300, including parts and labor. However, prices may vary based on the specific repairs needed and the service provider.