AutoCodes – Toyota – P043E 2015 Toyota RAV4

P043E 2015 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 2015 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 677

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 2015 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 2015 Toyota RAV4 - Evaporative Emission System Leak Detection Reference Orifice Low Flow - AutoCodes.com — P043E 2015 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 2015 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 2015 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 2015 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 2015 Toyota RAV4 code?

Need more information on how to fix the P043E 2015 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 2015 Toyota RAV4 Code

1. What are the common symptoms of OBDII code P043E in a 2015 Toyota RAV4?

- Common symptoms include the illumination of the Check Engine Light, decreased fuel efficiency, and potential gas odors.

2. What does the OBDII code P043E in a 2015 Toyota RAV4 indicate?

- The code indicates a potential issue with the Evaporative Emission System Leak Detection Reference Orifice Low Flow.

3. What are some possible causes of OBDII code P043E in a 2015 Toyota RAV4?

- Causes may include a loose gas cap, damaged fuel filler neck, faulty purge valve, vacuum leaks, or issues with the EVAP system components.

4. How can I diagnose the OBDII code P043E in my 2015 Toyota RAV4?

- Diagnosis typically involves using an OBDII scanner to retrieve the code, inspecting the EVAP system components for damage or leaks, and conducting a smoke test to pinpoint the source of the leak.

5. Can I continue driving my 2015 Toyota RAV4 with OBDII code P043E illuminated?

- It is generally not recommended to drive with the Check Engine Light on, as the issue causing the code may affect the vehicle's performance and emissions.

6. How can I repair OBDII code P043E in my 2015 Toyota RAV4?

- Repair methods may include tightening or replacing the gas cap, repairing or replacing damaged EVAP system components, clearing the code, and performing a drive cycle to ensure the issue is resolved.

7. Will OBDII code P043E in a 2015 Toyota RAV4 affect the vehicle's emissions?

- Yes, this code relates to the Evaporative Emission System, which is crucial for controlling fuel vapors and reducing emissions, so it is important to address the issue promptly.

8. Are there any DIY fixes for OBDII code P043E in a 2015 Toyota RAV4?

- DIY fixes may include checking and tightening the gas cap, inspecting hoses for visible damage, and clearing the code with an OBDII scanner, but more complex issues may require professional diagnosis and repair.

9. How long does it typically take to repair OBDII code P043E in a 2015 Toyota RAV4?

- The repair time can vary depending on the exact cause of the code, but simple fixes like tightening the gas cap can be done quickly, while more involved repairs may take longer.

10. Is it necessary to reset the OBDII code P043E in a 2015 Toyota RAV4 after repairing the issue?

- Yes, it is recommended to clear the code using an OBDII scanner after repairing the problem to ensure the Check Engine Light does not reappear due to a stored code.