Engine-Codes - Generic - P2401

P2401 Code - Evaporative Emission Leak Detection Pump Stuck OFF

- Code Popularity: 32,155 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
ChatAC AutoCodes.com AI Chat

What are the Possible Causes of the DTC P2401?

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 Car have Safety Recalls? → Check here

How to Fix the DTC P2401?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Search for P2401 Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P2401 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

What Does the P2401 Code Mean?

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 leak detection pump creates negative pressure through the reference orifice. When the system is normal, the EVAP pressure is between 97 to 100 kPa(abs) [726 to 750 mmHg(abs) (Typical value)] and saturated within a minute. If not, the ECM interprets this as a malfunction. The ECM illuminates the MIL and stores a Diagnostic Trouble Code (DTC) if this malfunction is detected in consecutive drive cycles. The Canister Pump Module is attached to the EVAP Canister and contains the Canister Pressure Sensor, the Leak Detection Pump, and the Vent Valve.
P2401 Code - Evaporative Emission Leak Detection Pump Stuck OFF

Need more Information on the Code?

Need more information on how to fix the P2401 code? Get Access to Factory Service Manuals

Code P2401 Information for Specific Makes

  • P2401 BMW Evaporative Emission System Leak Detection Pump Control Circuit Low  
  • P2401 Dodge Evaporative Emission System Leak Detection Pump Control Circuit Low
  • P2401 Lexus Evaporative Emission Leak Detection Pump Stuck OFF  📷
  • P2401 Scion Evaporative Emission Leak Detection Pump Stuck OFF  📷
  • P2401 Toyota Evaporative Emission Leak Detection Pump Stuck OFF    📷
  • P2401 Volvo EVAP System Leak Detection Pump Control Circuit Low

Need Help with the Code?

Get the P2401 code diagnosed by a professional: Find a repair shop in your area