AutoCodes – Ford – P1443 1998 Ford F150

P1443 1998 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 1998 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 3,200
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 06, 2020
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Code P1443 1998 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 1998 Ford F150 - Evaporative Emission System Control Valve Low/No Flow - AutoCodes.com
P1443 1998 Ford F150 Code - Evaporative Emission System Control Valve Low/No Flow

What are the Possible Causes of the DTC P1443 1998 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 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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1443 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 P1443 1998 Ford F150 Code

What does the OBDII code P1443 mean on a 1998 Ford F150?

P1443 indicates a problem with the Evaporative Emission System Control Valve, specifically low or no flow detected in the system.

What are the symptoms of code P1443 on a 1998 Ford F150?

Common symptoms include the Check Engine Light turning on, reduced fuel efficiency, and potential fuel odor near the vehicle.

What causes the P1443 code to appear on a Ford F150?

Possible causes include a faulty EVAP control valve, clogged or damaged vacuum hoses, a defective EVAP canister, or a failing pressure sensor.

Can I drive my 1998 Ford F150 with the P1443 code present?

Yes, the truck is typically safe to drive, but ignoring the issue may lead to reduced fuel efficiency and potential emissions-related problems.

How do I fix the P1443 code on a 1998 Ford F150?

Start by inspecting and replacing any damaged vacuum hoses, checking the EVAP control valve for clogs, and testing the vent solenoid and pressure sensor.

Where is the EVAP control valve located on a 1998 Ford F150?

The EVAP control valve is usually located near the EVAP canister, which is mounted near the fuel tank or along the frame of the vehicle.

What tools are needed to diagnose the P1443 code?

Basic tools include an OBDII scanner, a multimeter to test electrical connections, and possibly a smoke machine to detect vacuum leaks.

How much does it cost to repair code P1443 on a Ford F150?

Repair costs vary but typically range from $100 to $300 for parts and labor, depending on whether the EVAP valve or other components need replacement.

Can a faulty gas cap cause the P1443 code?

A loose or damaged gas cap is unlikely to cause this specific code but should still be checked as part of diagnosing EVAP system issues.

Does clearing the P1443 code fix the problem?

Clearing the code will turn off the Check Engine Light temporarily, but the underlying issue must be addressed to prevent it from returning.

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