AutoCodes – Toyota – P2420 2018 Toyota RAV4

P2420 2018 Toyota RAV4 Code - Evaporative Emission System Switching Valve Control Circuit High

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 High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P2420 2018 Toyota RAV4 indicates Evaporative Emission System Switching Valve Control Circuit High.
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
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code Popularity 653
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 18, 2022
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Code P2420 2018 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 ECM illuminates the MIL and sets a Diagnostic Trouble Code (DTC) if the difference in EVAP pressure in EVAP system pressure is small and does not increase more than 2.25 mmHg (0.3 kPa) within 10 seconds of changing the vent valve from OFF (vent) to ON (closed), the ECM determines that the vent valve is stuck OFF (vent).
OBDII Code P2420 2018 Toyota RAV4 - Evaporative Emission System Switching Valve Control Circuit High - AutoCodes.com
P2420 2018 Toyota RAV4 Code - Evaporative Emission System Switching Valve Control Circuit High

What are the Possible Causes of the DTC P2420 2018 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 P2420 2018 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 P2420 2018 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 P2420 2018 Toyota RAV4 code?

Need more information on how to fix the P2420 2018 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2420 2018 Toyota RAV4 code diagnosed by a professional: Find a repair shop in your area

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 P2420 2018 Toyota RAV4 Code

1. What are the common symptoms of OBDII code P2420 in a 2018 Toyota RAV4?

- Common symptoms include the Check Engine light illuminating on the dashboard, decreased fuel efficiency, rough idling, and difficulty starting the vehicle.

2. What does the OBDII code P2420 indicate in a 2018 Toyota RAV4?

- OBDII code P2420 indicates a problem with the evaporative emission system switching valve control circuit high in the 2018 Toyota RAV4.

3. What are the possible causes of OBDII code P2420 in a 2018 Toyota RAV4?

- Possible causes include a faulty evaporative emission system switching valve, damaged wiring or connectors in the control circuit, or a problem with the engine control module.

4. How serious is OBDII code P2420 in a 2018 Toyota RAV4?

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

5. Can I continue driving my 2018 Toyota RAV4 with OBDII code P2420?

- It is generally safe to drive the vehicle for a short period after the code appears, 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 P2420 in my 2018 Toyota RAV4?

- Diagnosing this code typically involves using an OBDII scanner to retrieve the code, inspecting the evaporative emission system components, and testing the switching valve control circuit for faults.

7. Is it possible to repair OBDII code P2420 in a 2018 Toyota RAV4 at home?

- Depending on your level of automotive expertise, you may be able to address this code at home by replacing the faulty components or repairing the wiring if you have the necessary tools and knowledge.

8. How much does it cost to fix OBDII code P2420 in a 2018 Toyota RAV4?

- The cost of repairing this code can vary depending on the extent of the issue and the specific components that need to be replaced. It is recommended to obtain quotes from reputable auto repair shops.

9. Will resetting the Check Engine light resolve OBDII code P2420 in my 2018 Toyota RAV4?

- Resetting the Check Engine light may temporarily turn it off, but it will not fix the underlying issue causing OBDII code P2420. It is important to address the root cause of the problem to prevent it from recurring.

10. How can I prevent OBDII code P2420 from reoccurring in my 2018 Toyota RAV4?

- To help prevent this code from reoccurring, regular maintenance of the evaporative emission system is recommended, including checking for leaks, ensuring proper sealing of the fuel cap, and addressing any warning signs promptly.

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