What is a leak detection pump?

The leak detection pump fires the Check Engine light when your vehicle has minor leaks that are difficult to detect.

Keep in mind:

Federal law requires a serviceable leak detection pump because it helps ensure your EVAP system is working properly. It is designed to prevent fuel vapors from escaping from the fuel system. Any leak in the system can release pollutant fumes, so this is a regulated aspect of a car engine.

How it is done:

• Disconnect the negative battery cable from the battery
• Locate the leak detection pump.
• Disconnect the steam/vacuum lines from the leak detection pump and unplug the electrical connector in place.
• Install a new leak detection pump, reinstall vacuum lines and electrical connector.
• Reconnect and check the battery for proper operation.
• Recheck EVAP Tests and Clear Codes

Our recommendations:

This repair is very complex and is optimally performed by an experienced technician. Be sure to disconnect the leak detection pump from the battery compartment to prevent damage to the leak detection pump wiring when you operate the leak detection pump.

What are the common symptoms that indicate the need to replace the leak detection pump?

The check engine light or fault light will come on if there is a problem with the leak detection pump. The diagnostic trouble code should be registered in the car's memory due to a poorly functioning pump.

How important is this service?

Leak detection pumps collect and move fuel vapors for combustion and monitor the fuel system to make sure there are no problems that could harm the environment or your vehicle. This is a vital service because it ensures that the rest of your vehicle is running properly.