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Troubleshooting Fault Code P0458 Caused by Faulty Purge Control Valve

Summary

This guide provides instructions on determining if a purge control valve is faulty and replace your Mitsubishi Outlander's purge control valve.

Evaporative Emission Control System (EVAP) is a pollution control System that prevents gasoline vapor from venting into the atmosphere. EVAP System consists of Fuel Tank, Gas Cap, Liquid-Vapor Separator, EVAP Canister, Purge Valve/Sensor, Vent Hoses, and Fuel Tank Pressure Sensor.

Symptoms

What you will need

Parts

Tools

Procedure

  1. If you are experiencing error code P0458 on a Mitsubishi, it means that the engine control module (ECM) has detected a malfunction with the purge control valve or its control circuit.  Most commonly, it's a purge valve problem.purge-valve-error

     

  2. Find the location of the purge control valve.purge-valve-location
  3. Remove 2 hoses that are connected to the purge valve.
  4. Remove the electrical connector from the purge valve.
  5. Using a T-25 L-shape screwdriver, remove the two (2) screws that connect the purge control valve to its bracket.
  6. Prepare the new purge control valve.Purge-valve

     

  7. Assemble in reverse order.
  8. Start the engine and observe if the check engine light (CEL or MIL) willengine light (CEL or MIL) will Illuminate.
  9. If MIL does not illuminate, then you are done. It may take up to two days for the check engine light to reset. Otherwise, there could be a problem with the purge valve wiring, the canister, or theengine light to reset. Otherwise, there could be a problem with the purge valve wiring, the canister, or the filler cap.

Petrol or gasoline used to propel our vehicles consists of various chemicals such as benzene, which, when inhaled, would pose a variety of health issues. To solve this problem, the government has mandated every car manufacturer to feed the gasoline vapor from the vehicle tank to the engine for combustion disposal.

Frequently Asked Questions

How long can you drive with an EVAP leak?

  • Is it Safe to Drive with an EVAP Leak? Technically, nothing is stopping you from driving with a leak. However, it's never wise to travel while gas fumes infiltrate the cabin or the atmosphere around the car.

What causes EVAP to fail?

  • The most common causes for EVAP leaks include bad seals and O-rings, a failing purge valve, a damaged hose or vent, or defective leak detection sensors.

Does EVAP leak affect gas mileage?

  • When a canister purge valve doesn't open as it should, your gas mileage might be negatively affected. This is because the vapors in your car used in combustion will go to the EVAP canister then get vented out into the environment, causing you to use some of the fuel that your car would usually use for burning.

Vehicle Application

  • 2007-2017 Mitsubishi Lancer/Galant Fortis 
  • 2007–2012 Peugeot 4007
  • 2012-2017 Peugeot 4008
  • 2009 Mitsubishi Outlander (Facelift Europe)
  • 2012 Mitsubishi Outlander Sport
  • 2013 Mitsubishi Outlander PHEV
  • 2010 Mitsubishi ASX, Mitsubishi RVR (Canada)
  • 2010-2015 Proton Inspira
  • 2007-now Mitsubishi Delica
  • 2018-now Mitsubishi Eclipse Cross
Troubleshooting Fault Code P0458 Caused by Faulty Purge Control Valve Evaporative Emission Control System (EVAP) is a pollution control System that prevents gasoline vapor from venting into the atmosphere.