P2401 2004 TOYOTA HIGHLANDER - EVAP System Leak Detection Pump Control Circuit Low
- Faulty Vacuum Pump Module
- Vacuum Pump Module harness is open or shorted
- Vacuum Pump Module circuit poor electrical connection.
- Faulty Engine Control Module (ECM)
Tech notesThere is a factory service bulletin for the following Toyota models:
2005–2006 Toyota Corolla
2005–2006 Toyota Matrix
Toyota Corolla, Matrix Factory Service Bulletin OBDII Code P2401
Service bulletin recommends replacing the EVAP Charcoal Canister Assembly to repair the problem.
When is the code detected?To determine leak criterion (Reference pressure), vacuum pump creates negative pressure in canister pump module through 0.02 inch orifice and pressure is measured. If the conditions are not met, Engine Control Module (ECM) the code will be set.
- Engine Light ON (or Service Engine Soon Warning Light)
P2401 2004 Toyota Highlander Description5 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.
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P2401 2004 TOYOTA HIGHLANDER CommentsHelp us improve AutoCodes.com. Leave a comment below or tell us if the information above help you fix the code. What are the symptoms on your vehicle for the P2401 2004 Toyota Highlander code? Have you replaced any parts?
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