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Town & Country/Grand Caravan Problem Codes

32 messages,  Last post on Nov 16, 2009 at 10:40 AM

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#28 of 32 Re: 2005 Grand Caravan Emission TestingProblem [xwesx] by yuthea Nov 05, 2009 (9:48 am)
Replying to: xwesx (Nov 04, 2009 9:33 am) Thanks very much for your comments. I want to clarify that most of the mileage was on highway drives. My issue right now is that the dealer has no idea what is wrong. The dealer mechanics have contacted the Dodge co. several times, as I was told. To me, they all are just guessing. They have replaced two exhaust related sensors and a computer (maybe just a module?). Yesterday, I talked with the dealer again, and they said they have to talk to Dodge engineer again.   I also talked yesterday with a Connecticut DMV emission engineer on the phone. He said would call me and would see me at the testing station today. But so far, he has not called me yet.   Have you had any experience with testing stations that their softawre were not compatible to all kinds of cars.   Note: A few weeks ago, before the computer was replaced, a friend of mine used his tester (a $50-kind) to checked my van out after I had told him the issue. We found every thing was good, but a few days later I took the van to have the test again and it was aborted again.   I have spent more than 10 trips between the test facility and the dealer in two months. It was fortunate that I have just lost my job and had time for this headache.   Thanks again. Replies to this message: xwesx (Nov 05, 2009 10:13 am) yuthea (Nov 06, 2009 8:37 am) xwesx (Nov 06, 2009 9:53 am) roadrage921 (Nov 16, 2009 10:40 am)
#29 of 32 Re: 2005 Grand Caravan Emission TestingProblem [yuthea] by xwesx Nov 05, 2009 (10:13 am)
Replying to: yuthea (Nov 05, 2009 9:48 am) I have never experienced compatibility issues with the testing computers. That said, I have only run three different vehicles through computer-interfaced emissions testing and all of them were late 90's models (OBD II).   Your 2005 model likely uses the OBD II CAN interface, but I still would not expect there to be compatibility issues. As I recommended before, taking the van to a different testing shop could help clear that as a possible source.   Also, your dealership should be able to use a laptop-based real-time scanner to monitor the vehicle while it is in use. If a circuit is failing to set as "ready," I would think a program like that could help pinpoint the source fairly well. Replies to this message: yuthea (Nov 06, 2009 8:37 am) xwesx (Nov 06, 2009 9:53 am) roadrage921 (Nov 16, 2009 10:40 am)
#30 of 32 Re: 2005 Grand Caravan Emission TestingProblem [xwesx] by yuthea Nov 06, 2009 (8:37 am)
Replying to: xwesx (Nov 05, 2009 10:13 am) This morning, I took my van to a Technical Center of the Connecticut State, and had my van retested. After I had explained and showed all the documents from the testing facility and dealer, the Technical Center retested my van. The test was PASSED. I asked what was the problem. The answer was "Some cars are very difficult to test."   When I got back home, I looked at the 'Vehicle Inspection Report'. They used PCTSI test type, instead of OBDII that the testing facility had used before.I do not understand the difference, but there is a comment at the bottom of the report:    "This vehicle is not ready to determine the status of the pollution control system and the vehicle received an alternate emissions test. On the next inspetion cycle, this readiness failure may result ina reject of the vehicle."   This means that I'm not out of the hook yet! Replies to this message: xwesx (Nov 06, 2009 9:53 am)
#31 of 32 Re: 2005 Grand Caravan Emission TestingProblem [yuthea] by xwesx Nov 06, 2009 (9:53 am)
Replying to: yuthea (Nov 06, 2009 8:37 am) Sounds like they ended up passing it based on the tailpipe emissions.   It is odd that something is preventing it from being in "ready "status, yet you are getting no codes indicating a bad sensor or some other fail. Perhaps monitoring your fuel economy, etc., over the next year or so versus prior (if you did that at all) will help to determine the source.   At least you can keep driving it for the time being!
#32 of 32 Re: 2005 Grand Caravan Emission TestingProblem [xwesx] by roadrage921 Nov 16, 2009 (10:40 am)
Replying to: xwesx (Nov 05, 2009 10:13 am) I am having a similar problem with a 99 caravan. Ready codes will set but once I cycle the key they will reset. I have had at least 3 tests and drive the vehicle with a scanner to monitor them. My frined had a similar problem on a liberty, they found the PCM was losing memory when key was off. the constant to the PCM was not working. I am in the process of getting a pin out to check if that is what is wrong with my van. My brother in law is a chrysler mechanic and he is stumped as well. We are checking the 12 volt to the pcm to make sure they are being provided. Don;t know if this will help but thought I would mention.

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