Chrysler Repair: transmission codes: 1784/1787/1788/1789, transmission control module, engine leaks


Question
QUESTION: My vehicle is leaking both oil and transmission fluid rapidly... It has not shifted in about 2 months...when it does shift it winds up just going back to not shifting. I've been to the repair men and they have told me that my transmission is shot, so I need a new one. I was doing an oil change on the car today and realized that the soft rubber boots on the   cv-joint are both split on the drivers side and the passengers side... my question is... Is there any way possible that this could be the cause of the leak and the constantly slipping? This problem is getting worse and i don't have the money to have my trani rebuilt so i was going to try to fix the drive axle to see if that fixed my problem i just need a second opinion.

ANSWER: Hi Roze,
No, the cv-boots being torn has no impact on the transmission or the engine leaks/problems. Those being torn just indicates that the joints are loosing their grease and will soon be so 'dry' that you will begin to hear them click (when you are turning) and in the long run if not re-booted/replaced the joint will fail.
About the transmission: do you have any fault code readouts from the transmission control module that might give an indication of what is actually wrong? If not, get a free readout at an Autozone parts store, and ask for the fault numbers. Then let me know and we can go from there.
Roland

---------- FOLLOW-UP ----------

QUESTION: Hello again sorry it took so long the dummy at autozone said my car could not be set up on scanner....my brother took care of it though. Here are the codes that are coming up...
P1787
P1788
P1784-1
P1784-2
P1789

Once again thank you for your assistance.   ROZE

Answer
Hi Roze,
All those codes are related to the transmission's hydraulic pressure switches not functioning in accordance with expectations. Most likely the codes were set when the transmission fluid level got too low to sustain the  hydraulic pressure in the transmission. My thought is that the source of the leak of the transmission fluid should be identified and stopped, then fill the transmission to the proper level, and finally road test the car to see if it will shift properly or not. It may well be that the unit has not been damaged and fixing the leak will solve the problem. So do that first before anything else. It may be an inexpensive fix that avoids any transmission removal or rebuild.
Please let me know what you learn, and tell me the year/model of the car when you do write back.
Roland
PS Please 'rate' my answer.