One problem related to o2 sensor has been reported for the 2005 Chrysler Pacifica. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Chrysler Pacifica based on all problems reported for the 2005 Pacifica.
I purchased my car in 2008 and the dealer (sheehy Ford) won't even take it back. The engine light stays on and it won't pass inspection. I had to replace the obd connector and it still wouldn't pass inspection. Took it back to the inspection station and it failed because of the oxygen sensor, replaced that and took it back for the 3rd time and it failed again because the machine read: monitors not ready. I'm starting to think that the power train and the engine are faulty on my vehicle. Sheehy knew they sold me a lemon, I've tried to have them resolve this issue numerous times and nothing. I want them to either fix the problem or give me another car. I reported them to the bbb as well and they never responded to bbb on my complaint. That looks so suspect in my eyes.