P2420 - Evaporative Emission System Switching Valve Control Circuit High

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty Vacuum Pump Module
  • Vacuum Pump Module harness is open or shorted
  • Vacuum Pump Module circuit poor electrical connection.
  • Faulty Engine Control Module (ECM)

Possible symptoms

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

P2420 Description

5 hours after the ignition switch is turned OFF, the electric vacuum pump creates negative pressure (vacuum) in the EVAP (Evaporative Emission) system. The Engine Control Module (ECM) monitors for leaks and actuator malfunctions based on the EVAP pressure.
OBDII Code P2420 - Evaporative Emission System Switching Valve Control Circuit High - AutoCodes.com

P2420 Information for specific makes

  • P2420 DODGE Evaporative Emission System Switching Valve Control Circuit High
  • P2420 LEXUS Evaporative Emission System Switching Valve Control Circuit High
  • P2420 SCION Evaporative Emission System Switching Valve Control Circuit High
  • P2420 TOYOTA Evaporative Emission System Switching Valve Control Circuit High
  • P2420 VOLVO Leak Diagnostic Unit Valve Signal Too High

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P2420 Comments

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