Why did my check engine light come on after getting gas?

Typically if a check engine light comes on after filling the fuel tank, it’s due to a vapor pressure problem. This often is triggered by one of the EVAP system components. This system is designed to filter harmful vapors from the fuel tank. An older or incorrect fuel cap can cause this issue.

What causes an engine light to come on a Jeep Liberty?

The most common reasons a Jeep Liberty has a check engine light are an emissions system component, a sensor, or a catalytic converter.

Can gas Make your check engine light come on?

Fuel System Issues Something as simple as forgetting to replace the gas cap could cause your “check engine” light to come on. This is because the gas cap keeps vapors from escaping the fuel tank. A loose or broken gas cap can dramatically reduce fuel efficiency and increase emissions.

How do you reset the check engine light on a 2011 Jeep Liberty?

A few different ways to reset your check engine light are:

  1. Let it go off by itself.
  2. Turn your ignition on and off several times in a row.
  3. Disconnect your battery and reconnect it.
  4. Buy an OBD II scanner (they’re relatively inexpensive) and follow the instructions (it’s pretty easy)

What does the check engine light look like on a Jeep Liberty?

The check engine light for the Jeep Liberty means that the on-board diagnostics or the OBD detected a problem with the engine, emission system or the transmission though it is less common for it to be the transmission.

How do I reset my Jeep Liberty?

How to Reset Perform Maintenance on a Jeep Liberty

  1. Turn on the engine.
  2. On the vehicle’s dash, press the “Step” button until “Miles to Service” is displayed.
  3. Press and hold the “Reset” button, near the “Step” button, until the “Miles to Service” flashes and resets. Verify the “Perform Service” light goes away.