AutoCodes – Toyota – P043E 2016 Toyota RAV4

P043E 2016 Toyota RAV4 Code - Evaporative Emission System Leak Detection Reference Orifice Low Flow

Quick Answer

5 hours after the ignition switch is turned off, the leak detection pump creates negative pressure (vacuum) in the Evaporative Emission (EVAP) system. Common causes include Faulty Canister Pump Module, Canister Pump Module harness is open or shorted, Canister Pump Module 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: P043E 2016 Toyota RAV4 indicates Evaporative Emission System Leak Detection Reference Orifice Low Flow.
Common causes: Common causes include Faulty Canister Pump Module, Canister Pump Module harness is open or shorted, Canister Pump Module 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 484

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 Aug 30, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P043E 2016 Toyota RAV4 Description

5 hours after the ignition switch is turned off, the leak detection pump creates negative pressure (vacuum) in the Evaporative Emission (EVAP) system. The Engine Control Module (ECM) monitors for leaks and actuator malfunctions based on the EVAP pressure. The leak detection pump creates negative pressure through the reference orifice. When the system is normal, the EVAP pressure is between 97 to 100 kPa(abs) [726 to 750 mmHg(abs) (Typical value)] and saturated within a minute. If not, the ECM interprets this as a malfunction. The ECM illuminates the MIL and stores a Diagnostic Trouble Code (DTC) if this malfunction is detected in consecutive drive cycles. The Canister Pump Module is attached to the EVAP Canister and contains the Canister Pressure Sensor, the Leak Detection Pump, and the Vent Valve.

OBDII Code P043E 2016 Toyota RAV4 - Evaporative Emission System Leak Detection Reference Orifice Low Flow - AutoCodes.com — P043E 2016 Toyota RAV4 Code - Evaporative Emission System Leak Detection Reference Orifice Low Flow

What does this mean?

What are the Possible Causes of the DTC P043E 2016 Toyota RAV4?

Faulty Canister Pump Module
Canister Pump Module harness is open or shorted
Canister Pump Module circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P043E 2016 Toyota RAV4?

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 P043E 2016 Toyota RAV4 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.

Need more information about the P043E 2016 Toyota RAV4 code?

Need more information on how to fix the P043E 2016 Toyota RAV4 code? Get Access to Factory Service Manuals

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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 P043E 2016 Toyota RAV4 Code

1. What does the OBDII code P043E on a 2016 Toyota RAV4 indicate?

The code P043E specifically points to an issue with the Evaporative Emission System Leak Detection Reference Orifice Low Flow in the vehicle.

2. What are common symptoms of the P043E code in a 2016 Toyota RAV4?

Common symptoms of the P043E code may include the illumination of the check engine light, decreased fuel efficiency, and potentially a fuel odor.

3. What are the possible causes of the P043E code in a 2016 Toyota RAV4?

The P043E code in a 2016 Toyota RAV4 can be triggered by issues such as a loose gas cap, a faulty purge valve, a damaged EVAP system component, or a vacuum leak.

4. How can I diagnose the P043E code in my 2016 Toyota RAV4?

Diagnosing the P043E code typically involves using an OBDII scanner to retrieve the code, inspecting the EVAP system components for visible damage, and checking for leaks in the system.

5. Can I drive my 2016 Toyota RAV4 with the P043E code?

It is generally not recommended to drive your vehicle with the P043E code illuminated, as it can lead to decreased fuel efficiency and potential damage to the emission control system.

6. How can I repair the P043E code in my 2016 Toyota RAV4?

Repairing the P043E code may involve tightening or replacing the gas cap, replacing the purge valve or other faulty components, inspecting and repairing any leaks in the EVAP system, and clearing the code with an OBDII scanner.

7. Is the P043E code in a 2016 Toyota RAV4 an urgent issue?

While the P043E code may not require immediate attention if the vehicle is running fine, it is still important to address the underlying cause promptly to prevent potential damage to the emission system and maintain optimal fuel efficiency.

8. How much does it cost to fix the P043E code on a 2016 Toyota RAV4?

The cost of fixing the P043E code can vary depending on the specific issue causing the code, the labor rates in your area, and whether you choose to address the problem yourself or take it to a professional mechanic.

9. Can I reset the P043E code in my 2016 Toyota RAV4 without fixing the issue?

While you can clear the code with an OBDII scanner, it is not recommended to reset the code without addressing the underlying problem, as it may lead to recurring issues and potential damage to the vehicle's emission system.

10. How often does the P043E code occur in a 2016 Toyota RAV4?

The occurrence of the P043E code in a 2016 Toyota RAV4 can vary depending on factors such as driving conditions, maintenance history, and the overall condition of the vehicle's emission system.