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P2420 Scion Code - Evaporative Emission System Switching Valve Control Circuit High

- Code Popularity: 7,742 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P2420 Scion?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Canister Pump Module
  • Canister Pump Module harness is open or shorted
  • Canister Pump Module circuit poor electrical connection
  • Faulty Engine Control Module (ECM)
⚠ Does your Scion have Safety Recalls? → Check here

How to Fix the DTC P2420 Scion?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Search for P2420 Scion Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2420 Scion code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code P2420 Scion 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 Scion - Evaporative Emission System Switching Valve Control Circuit High - AutoCodes.com
P2420 Scion Code - Evaporative Emission System Switching Valve Control Circuit High

Need More Information on the Code?

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

Information for Specific Scion Models

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Code P2420 Scion comments

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