AutoCodes – Toyota – P043F 2016 Toyota RAV4

P043F 2016 Toyota RAV4 Code - Evaporative Emission System Reference Orifice High 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: P043F 2016 Toyota RAV4 indicates Evaporative Emission System Reference Orifice High 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 439

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 P043F 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 P043F 2016 Toyota RAV4 - Evaporative Emission System Reference Orifice High Flow - AutoCodes.com — P043F 2016 Toyota RAV4 Code - Evaporative Emission System Reference Orifice High Flow

What does this mean?

What are the Possible Causes of the DTC P043F 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 P043F 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 P043F 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 P043F 2016 Toyota RAV4 code?

Need more information on how to fix the P043F 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 P043F 2016 Toyota RAV4 Code

1. What are the common symptoms of OBDII code P043F in a 2016 Toyota RAV4?

- Common symptoms include the check engine light coming on, decreased fuel efficiency, and potential rough idling.

2. What can cause the OBDII code P043F in a 2016 Toyota RAV4?

- The code is often triggered by a high flow condition in the evaporative emission system due to a leak, faulty purge valve, or issues with the reference orifice.

3. How serious is OBDII code P043F in a 2016 Toyota RAV4?

- While the vehicle may still be driveable, it is essential to address the issue promptly to prevent potential damage to the emission control system and ensure optimal performance.

4. Can a loose gas cap trigger code P043F in a 2016 Toyota RAV4?

- A loose or faulty gas cap can sometimes lead to an evaporative emission system leak, which, in turn, may trigger the P043F code. Always check the gas cap first when diagnosing.

5. What are some DIY repair tips for OBDII code P043F in a 2016 Toyota RAV4?

- DIY repair tips include checking and tightening the gas cap, inspecting hoses for leaks, testing the purge valve, and ensuring the reference orifice is clean and functioning correctly.

6. Is it safe to continue driving with OBDII code P043F in a 2016 Toyota RAV4?

- While the vehicle may still be operable, it is recommended to address the issue promptly to prevent potential damage to the emission system and ensure compliance with emissions regulations.

7. How can a mechanic diagnose OBDII code P043F in a 2016 Toyota RAV4?

- A mechanic can use a scan tool to retrieve the specific code, inspect the evaporative emission system components, perform smoke tests to detect leaks, and test the purge valve functionality.

8. Can a failing oxygen sensor cause OBDII code P043F in a 2016 Toyota RAV4?

- A failing oxygen sensor can contribute to the triggering of code P043F as it may affect the air-fuel mixture, but the root cause is typically related to the evaporative emission system.

9. How much does it typically cost to repair OBDII code P043F in a 2016 Toyota RAV4?

- The repair costs for OBDII code P043F can vary depending on the exact cause, but it may range from $100-$500 for parts and labor, with the reference orifice replacement being a common repair.

10. Can resetting the check engine light resolve OBDII code P043F in a 2016 Toyota RAV4?

- Resetting the check engine light may temporarily clear the code, but it will likely return if the underlying issue, such as a high flow in the evaporative emission system, is not addressed.