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Engine-Codes – Toyota – P2420 2011 Toyota Camry

P2420 2011 Toyota Camry Code - Evaporative Emission System Switching Valve Control Circuit High

Quick Answer

The P2420 diagnostic trouble code (DTC) for a 2011 Toyota Camry indicates a problem with the evaporative emission system switching valve control circuit being too high. Common causes include Faulty Switching Valve: The switching valve itself may be malfunctioning, causing the control circuit to read high, Wiring Issues: Damage or corrosion in the wiring harness connected to the switching valve can disrupt the voltage signal, ECM Malfunction: A problem with the engine control module (ECM) can also cause the control circuit to read high. 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 2011 Toyota Camry indicates Evaporative Emission System Switching Valve Control Circuit High.
Common causes
Common causes include Faulty Switching Valve: The switching valve itself may be malfunctioning, causing the control circuit to read high, Wiring Issues: Damage or corrosion in the wiring harness connected to the switching valve can disrupt the voltage signal, ECM Malfunction: A problem with the engine control module (ECM) can also cause the control circuit to read high.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 15, 2024
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Code P2420 2011 Toyota Camry Description

The P2420 diagnostic trouble code (DTC) for a 2011 Toyota Camry indicates a problem with the evaporative emission system switching valve control circuit being too high. The evaporative emission system is designed to capture and store fuel vapors from the fuel tank to prevent them from escaping into the atmosphere. The switching valve controls the flow of vapors between the fuel tank and the charcoal canister.

OBDII Code P2420 2011 Toyota Camry - Evaporative Emission System Switching Valve Control Circuit High
P2420 2011 Toyota Camry Code - Evaporative Emission System Switching Valve Control Circuit High

Common Causes of P2420 2011 Toyota Camry

  1. Faulty Switching Valve: The switching valve itself may be malfunctioning, causing the control circuit to read high.
  2. Wiring Issues: Damage or corrosion in the wiring harness connected to the switching valve can disrupt the voltage signal.
  3. ECM Malfunction: A problem with the engine control module (ECM) can also cause the control circuit to read high.
  4. Vacuum Leaks: Any vacuum leaks in the evaporative emission system can affect the switching valve's operation and trigger this code.

Symptoms of P2420 2011 Toyota Camry

  1. Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the dashboard.
  2. Rough Idle: A high switching valve control circuit can cause the engine to idle roughly or inconsistently.
  3. Decreased Fuel Efficiency: The vehicle may experience reduced fuel efficiency due to improper operation of the evaporative emission system.
  4. Failed Emissions Test: If the issue is not resolved, the vehicle may fail an emissions test due to increased emissions output.

How to Fix P2420 2011 Toyota Camry

  1. Diagnose the Issue: Use a scan tool to retrieve the DTC and perform a thorough inspection of the evaporative emission system components.
  2. Test the Switching Valve: Check the switching valve for proper operation and replace it if necessary.
  3. Inspect Wiring: Inspect the wiring harness for any damage or corrosion, and repair or replace as needed.
  4. Check ECM: Verify the functionality of the engine control module and address any issues if found.
  5. Clear Codes: After completing the repairs, clear the DTC and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P2420 2011 Toyota Camry

The typical repair costs for addressing a P2420 code on a 2011 Toyota Camry can vary depending on the specific cause of the issue. In general, parts for this repair may range from $100 to $300, while labor costs can add an additional $100 to $200. Overall, the total repair cost could fall between $200 and $500. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's recommended to check with local shops for a more accurate estimate.

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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 P2420 2011 Toyota Camry Code

1. What does the OBDII code P2420 on a 2011 Toyota Camry mean?

The code P2420 indicates a problem with the Evaporative Emission System Switching Valve Control Circuit High.

2. What are the common symptoms of OBDII code P2420 in a 2011 Toyota Camry?

Common symptoms include the check engine light coming on, reduced fuel efficiency, and potential issues with the vehicle's emission control system.

3. What are the possible causes of OBDII code P2420 in a 2011 Toyota Camry?

Possible causes include a faulty switching valve, wiring issues in the control circuit, a malfunctioning PCM (powertrain control module), or a vacuum leak in the evaporative emission system.

4. How can I diagnose the cause of OBDII code P2420 in my 2011 Toyota Camry?

Diagnosis typically involves using a scan tool to read the code, checking the switching valve for proper operation, inspecting the wiring for damage, and testing the PCM's functionality.

5. Can I drive my 2011 Toyota Camry with OBDII code P2420?

It is generally not recommended to drive the vehicle with this code present, as it can lead to increased emissions and potential damage to the vehicle's catalytic converter.

6. How can I repair OBDII code P2420 in my 2011 Toyota Camry?

Repair options may include replacing the switching valve, repairing damaged wiring, resetting the PCM, or addressing any vacuum leaks in the evaporative emission system.

7. Is it possible to clear OBDII code P2420 in a 2011 Toyota Camry without fixing the underlying issue?

While you can clear the code using a scan tool, it will likely return if the root cause of the problem is not addressed.

8. How much does it cost to fix OBDII code P2420 in a 2011 Toyota Camry?

The cost of repairs can vary depending on the specific issue causing the code, but it is advisable to consult a mechanic for an accurate estimate.

9. Can a DIY enthusiast fix OBDII code P2420 in a 2011 Toyota Camry?

Depending on your skill level and access to tools, some individuals may be able to address simpler causes of this code, such as replacing a faulty switching valve or repairing damaged wiring.

10. How often does OBDII code P2420 occur in 2011 Toyota Camry vehicles?

While the frequency of this specific code may vary, issues related to the evaporative emission system are relatively common and can occur in vehicles of this age and model.

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