Questionthese are the trouble codes I got from the test
P0605 Internal Control Module Read Only Memory (ROM) Error
P0700 Transmission Control System Malfunction
P0705 Transmission Range Sensor Circuit malfunction (PRNDL Input)
P1288 Intake manifold tune valve open or short circuit
P1490 Low speed radiator fan relay open or short circuit
thanks
-------------------------
Followup To
Question -
The problem I'm facing is the transmission gear can not change wile I'm driving, it keep I think 2nd gear only all the time. The Reverse and Park are working. My first though is there is a problem with Transmission Range Sensor (TRS) where is a Temperature sensor are integrated with it, the failure in temp sensor will lead to the same situation I'm facing now.
Appreciate your recommendations
The Car is: Chrysler 300M model 2001
Answer -
Hi Sultan,
It sounds like your electronically controlled transaxle has detected some problem with the unit and in order to avoid any unnecessary damage has gone into "limp-in" mode which means it won't shift out of 2nd gear. It allows the car to be driven at moderate speed to a garage for analysis. The transmission controller logs the problem as a two digit code number stored in its memory. The transmission controller does not have a self-read capability, you have to attach a code reader to a plug located under the dash and readout the transmission contoller (which is a separate unit from the engine controller).
The dealer or a competent transmission shop should have a readout unit to find out what the code number is and from that they can make some conclusions about whether the trans can be repaired without being removed from the car (for example a electrical or hydrualic pressure problem) OR if some mechanical damage is involved (but follow-up a "mechanical damage" diagnosis by dropping the oil pans and looking for debris to be present or not) which if true would require a pretty expensive rebuild, I am sorry to say. No debris in the pans would suggest the possibility of an hydraulic problem only.
So that is my best advice, go to a dealer/independent and ask for a diagnostic readout of the transmission controller and an estimate for repairs. Get the code number(s), and if you like, write back with a 'follow-up' question to me and we can compare what you are told with what the shop manual says is the problem of that code, and then decide if you are getting the correct advice. You don't have to give them a blank check, just ask for a diagnostic readout, the code numbers and the repair estimate. It will cost something to get that done (should be under $100), but the more information you have before going forward the better. I would not go to a franchise-type (AAMCO) transmission shop, but rather an independent with a good reputation or a Chrysler dealer. The place has to have a code reader with the adapter plug that mates with the Chrysler-type transmission readout plug. So inquire whether that is true, if you don't go to a dealer shop. If you go ahead with the repair, the cost of the diagnosis is often credited against the repair cost. But don't rush to judgement because a total rebuild costs about $1,500 so you don't want to authorize that unless it is the only possibility. And of course, you might want to check the fluid level in the transmission as that can cause such a "limp-in", but don't overfill it, and make sure you use Chrysler brand fluid if you add any.
Roland
AnswerHi Sultan,
That is a useful and complete report. The first three of course refer to the transmission the last two to the engine. The first two are describing a possible failure of the transmission control module. However before replacing the control module the third fault should be investigated and possibly corrected because although it will by itself not cause a limp in it could cause other fault codes that will produce limp in (e.g. the first two codes). So I would ask the shop to deal with the shift lever fault problem first and after that is cleared then see if the limp in situation has been eliminated and the controller fault codes "cleared". That way you might avoid an unnecessary replacement of the transmission controller. Fortunatley, none of the codes have the possibility of there being any internal damage to the transmission so don't let anyone get you to agree to a "rebuild".
The last two are fairly straight forward electrical control issues with the low speed fan relay and a valve that adjusts the air intake pathway for better engine function.
If you aren't doing these repairs yourself a competent Chrysler mechanic can handle those easily.
By the way, you might want to read over the original warranty for the car as it is only 4 model years old and some or all of these issues might be covered by that warranty which would save you the costs. if so, the Chrysler dealer would be the one to do the repairs for free.
Let me know how this works out.
Roland
