Engine-CodesMercury – P1443 Mercury

P1443 Mercury Code - Evaporative Emission System Control Valve Low/No Flow

Quick Answer

The P1443 code for Mercury vehicles refers to the Evaporative Emission System Control Valve Low/No Flow. Common causes include Faulty evaporative emission system control valve, Clogged or blocked control valve, Wiring or electrical issues. 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 Mercury indicates Evaporative Emission System Control Valve Low/No Flow.
Common causes
Common causes include Faulty evaporative emission system control valve, Clogged or blocked control valve, Wiring or electrical issues.
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.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1443 Mercury Description

The P1443 code for Mercury vehicles refers to the Evaporative Emission System Control Valve Low/No Flow. This code indicates that there is a problem with the control valve within the evaporative emission system. The evaporative emission system is responsible for capturing and storing fuel vapors before they can escape into the atmosphere. The control valve plays a crucial role in regulating the flow of vapors within the system.

OBDII Code P1443 Mercury - Evaporative Emission System Control Valve Low/No Flow
P1443 Mercury Code - Evaporative Emission System Control Valve Low/No Flow

Common Causes of P1443 Mercury

  1. Faulty evaporative emission system control valve
  2. Clogged or blocked control valve
  3. Wiring or electrical issues
  4. Vacuum leaks in the evaporative emission system
  5. Defective evaporative emission system components

Symptoms of P1443 Mercury

  1. Check engine light illuminated on the dashboard
  2. Decreased fuel efficiency
  3. Strong fuel smell
  4. Rough idling or stalling
  5. Failed emissions test

How to Fix P1443 Mercury

  1. Begin by diagnosing the exact cause of the P1443 code using a diagnostic scanner to pinpoint the issue within the evaporative emission system.
  2. Inspect the control valve and associated components for any signs of damage, blockages, or leaks.
  3. Test the control valve for proper operation and replace it if it is found to be faulty.
  4. Check the wiring and electrical connections related to the control valve for any issues and repair or replace as necessary.
  5. Clear the trouble code from the vehicle's computer system and perform a test drive to ensure the issue has been resolved.

Cost to Fix P1443 Mercury

The cost of repairing the P1443 code on a Mercury vehicle can vary depending on the specific cause of the issue and the extent of the repairs needed. On average, the cost of parts for this repair can range from $100 to $300, with labor costs adding an additional $100 to $200. Overall, the total repair cost for addressing the Evaporative Emission System Control Valve Low/No Flow code typically falls between $200 and $500. It's important to note that labor rates and part prices can vary significantly based on location, vehicle make and model, and the specific auto repair shop chosen. It is advisable to obtain multiple quotes from reputable repair shops to ensure a competitive price for the repair.

Tech Notes for P1443 Mercury

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.

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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.

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