AutoCodes – Acura – P0443 Acura

P0443 Acura Code - Evaporative Emission Canister Purge Valve Circuit Malfunction

Quick Answer

The Evaporative Emission (EVAP) Canister Purge Valve is attached to the vacuum port between the intake manifold and the EVAP canister. Common causes include Faulty Evaporative Emission (EVAP) Canister Purge Valve, EVAP Canister Purge Valve harness is open or shorted, EVAP Canister Purge Valve 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 Acura indicates Evaporative Emission Canister Purge Valve Circuit Malfunction.
Common causes: Common causes include Faulty Evaporative Emission (EVAP) Canister Purge Valve, EVAP Canister Purge Valve harness is open or shorted, EVAP Canister Purge Valve 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 18,111

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 Dec 18, 2023

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

The Evaporative Emission (EVAP) Canister Purge Valve is attached to the vacuum port between the intake manifold and the EVAP canister. The Powertrain Control Module (PCM) does not turn on the EVAP canister purge valve when the engine coolant temperature is less than a specified value. The PCM adjusts the amount of fuel vapor sent to the engine by controlling the EVAP canister purge valve duty cycle. When the return signal does not change according to the EVAP canister purge valve output for a set time, the PCM detects a malfunction and stores a Diagnostic Trouble Code (DTC).

OBDII Code P0443 Acura - Evaporative Emission Canister Purge Valve Circuit Malfunction - AutoCodes.com — P0443 Acura Code - Evaporative Emission Canister Purge Valve Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC P0443 Acura?

Faulty Evaporative Emission (EVAP) Canister Purge Valve
EVAP Canister Purge Valve harness is open or shorted
EVAP Canister Purge Valve circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P0443 Acura?

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 Acura 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 Acura Code

1. What is the OBDII code P0443 in Acura vehicles?

The OBDII code P0443 in Acura vehicles indicates a malfunction in the evaporative emission canister purge valve circuit.

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

Common symptoms of a P0443 code in an Acura may include rough idling, decreased fuel efficiency, and the illumination of the Check Engine Light.

3. What causes the P0443 code to trigger in an Acura?

The P0443 code in an Acura is typically triggered by a faulty evaporative emission canister purge valve, damaged wiring or connectors, or issues with the engine control module.

4. How do I diagnose a P0443 code in my Acura?

Diagnosing a P0443 code in an Acura involves using an OBDII scanner to read the code, inspecting the purge valve and its wiring, checking for vacuum leaks, and testing the electrical connections.

5. Can I continue driving my Acura with a P0443 code?

While it may be possible to continue driving your Acura with a P0443 code, it is recommended to address the issue promptly to prevent further damage to the vehicle and ensure optimal performance.

6. How can I repair a P0443 code in my Acura?

Repairing a P0443 code in an Acura may involve replacing the evaporative emission canister purge valve, repairing or replacing damaged wiring, and clearing the code with an OBDII scanner.

7. Are there any DIY tips for fixing a P0443 code in an Acura?

DIY tips for fixing a P0443 code in an Acura include checking and tightening loose connections, inspecting the purge valve for debris, and ensuring proper routing of the wiring.

8. What happens if I ignore a P0443 code in my Acura?

Ignoring a P0443 code in your Acura can lead to decreased fuel efficiency, increased emissions, potential damage to the engine or emission control system, and may cause the vehicle to fail an emissions test.

9. How much does it cost to repair a P0443 code in an Acura?

The cost to repair a P0443 code in an Acura can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor at a professional repair shop.

10. Can a P0443 code in an Acura be prevented?

Preventing a P0443 code in an Acura involves regular maintenance of the vehicle's emission control system, checking for any signs of leaks or damage, and addressing any related issues promptly to avoid triggering the code.