AutoCodes – Toyota – P043E 2014 Toyota RAV4

P043E 2014 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 2014 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 514

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 2014 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 2014 Toyota RAV4 - Evaporative Emission System Leak Detection Reference Orifice Low Flow - AutoCodes.com — P043E 2014 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 2014 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 2014 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 2014 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 2014 Toyota RAV4 code?

Need more information on how to fix the P043E 2014 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 2014 Toyota RAV4 Code

1. What are the common symptoms of OBDII code P043E in a 2014 Toyota RAV4?

- The common symptoms include the check engine light coming on, decreased fuel efficiency, and potential sulfur or rotten egg smells from the exhaust.

2. What does the OBDII code P043E in a 2014 Toyota RAV4 indicate?

- The code P043E indicates a problem with the Evaporative Emission System Leak Detection Reference Orifice Low Flow in the vehicle.

3. What are the possible causes of OBDII code P043E in a 2014 Toyota RAV4?

- Possible causes for code P043E include a loose gas cap, damaged vacuum hoses, faulty purge valve, or issues with the fuel tank pressure sensor.

4. How serious is OBDII code P043E in a 2014 Toyota RAV4?

- While the vehicle may still be driveable with this code, it is important to address it promptly to prevent potential damage to the emission control system and maintain optimal engine performance.

5. Can I continue to drive my 2014 Toyota RAV4 with OBDII code P043E?

- It is generally safe to drive the vehicle with the code P043E, but it is recommended to have the issue diagnosed and repaired as soon as possible to avoid further complications.

6. How can I diagnose OBDII code P043E in my 2014 Toyota RAV4?

- Diagnosis typically involves using an OBDII scanner to read the code, inspecting the gas cap, checking the vacuum hoses for leaks, and testing the purge valve and fuel tank pressure sensor.

7. What are some repair tips for resolving OBDII code P043E in a 2014 Toyota RAV4?

- Repair tips include ensuring the gas cap is tightened properly, replacing damaged vacuum hoses, cleaning or replacing the purge valve, and testing or replacing the fuel tank pressure sensor.

8. Can a DIY enthusiast fix OBDII code P043E in a 2014 Toyota RAV4?

- While some basic checks like tightening the gas cap can be done by a DIY enthusiast, diagnosing and repairing complex issues related to the evaporative emission system may require professional help.

9. How much does it typically cost to repair OBDII code P043E in a 2014 Toyota RAV4?

- The cost of repairing code P043E can vary depending on the root cause of the issue, but it may range from $100 to $500 or more, including parts and labor.

10. How can I prevent OBDII code P043E from recurring in my 2014 Toyota RAV4?

- To prevent the recurrence of code P043E, make sure to regularly inspect and maintain the evaporative emission system components, such as the gas cap, vacuum hoses, purge valve, and fuel tank pressure sensor.