Most of the time that serious problem is a misfire. Connect scan tool to the 16 pin data link connector dlc located near the steering column.

Understanding Jeep Oil Change Indicator Lights Yourmechanic Advice

And the tricky thing with the o2 sensor is that the car will continue to drive well so you might want to dismiss the light.

Jeep liberty check engine light. In some cases you need to pull over immediately to prevent damage while in others you merely need to tighten you gas cap next time you stop in order to reset the service engine soon light. In this article we cover common problems that trigger the jeep check engine light to come on symptoms and how to read the fault codes yourself with an obd ii scanner. A failing oxygen sensor also known as an o2 sensor is one of the most common reasons for that jeep check engine light to come on.

But an o2 sensor code will surely show up in a diagnostic test. You should have it looked at and fixed by a qualified mechanic before attempting to reset and turn off the light yourself. This flashing light should not be ignored.

When the check engine light illuminates on your jeep liberty it is the result of a problem code being sent from a sensor in the vehicle to the internal on board diagnostics obd computer. It means there is an electrical problem. A check engine light can indicate a broad spectrum of problems with your 2011 jeep liberty.

Jeep check engine light cel comes on when the on board diagnostic obd system detects a problem with the engine transmission or evaporative system. The connector may have a removable cover. When your engine is misfiring it is dumping raw fuel into the exhaust.

A flashing check engine light is your jeep liberty s way of saying i have a serious problem don t ignore me. When retrieving jeep check engine light codes with an obd ii scan tool proceed as follows.