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. Some of the most common problems for the light to come on are worn or bad spark plugs, bad oxygen sensor or a loose gas cap. The more common problems are pretty easy and cheap fixes. Changing the spark plugs only cost about $5 to $10 for new ones and only takes about 10 minutes to change them. Replacing the oxygen sensor is only about $30 to $40 and only takes about 5 minutes or so. Fixing a loose gas cap will sometime mean that it wasn't tightened enough and You will just need to tighten it.
Stephanie K
July 30, 2020
A few causes for a check engine light to come on on the Jeel Liberty is a loose gas cap, bad oxygen sensor or electrical system issues.
Rudy
March 7, 2022
Disconnected battery, light went off, drove for a whole day. Started this am light came o?
Dave
February 9, 2022
Check engine light come on the other night came back put all new CO2 sensors on it It wants to idle rough all new coils are on at spark plugs for three years old but I did put in good ones in it three years ago can’t figure it out You can call me at 330-601-4999 thank you very much
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