Check Engine Light- Code PO442
2003 Liberty 3.7L.....check engine light went on this morning, and stayed on while vehicle was running. Jeep runs fine. I manually retrieved the code PO442. After I got the code, I disconnected the battery, and the check engine light went out. I drove it around some, and as of yet, it has not come back on. Would appreciate comments, suggestions, and if possible, the meaning of PO442. Thanks in advance.
problem solved at least for now
I took the gas cap off, and made sure to seat it real firmly. Then i disconnected the negative cable of the battery for about a minute, reconnected it, started the engine, and the check engine light went out. After driving for about 30 miles, it's still out, so I'm hoping I solved my own problem.
light back on
Originally Posted by jp7794 View Post
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