I have a 2006 2.4L P.T. Cruiser (conv) that has 44700 miles. I have a check engine light that points to the problem being the transmission control power unit undervolt.

Asked by Jan 23, 2014 at 07:32 AM about the 2006 Chrysler PT Cruiser GT Convertible

Question type: Maintenance & Repair

For 2 months I did not drive my car. I
started the car every week for the
battery charge. 2-3 weeks before I
had finally had the $ to go get it
checked at Chrysler I went  to start
the car and the battery was dead.
After being jumped I saw they the
check light was off. I drive for over 20
miles and nothing. About 3 weeks
later it came back. I disconnected
the ā˛•terminal for a few hours and
when I reattached it the check light
was again off. The next time it was
abut two weeks and now about 5
days. The transmission runs great,
sounds great and feels great.
Besides spending a boat load of
cash is there any other way to fix this
for good?  Why is it happening and
why does draining the power work?  
Please help. I am planning a long trip
in the spring and I don't want the
specter of a check light that could
happen at any time. Is the module
expensive to replace??

1 Answer

3,410

Disconnecting the battery is erasing the memory in the cars computer. That's why the CEL is off after you do that. It doesn't come one right away because certain malfunctions need to be present for a certain period of time before the computer turns on the light. As to why the code for the TCM is there, I cant say. I haven't encountered that one yet.

4 of 4 people found this helpful.

Your Answer

Add photo

Related Questions

Search Chrysler PT Cruiser Questions

Chrysler PT Cruiser Experts

#1 Tom Demyan
Tom Demyan
Reputation 2,210
#2 Gypsy Rose
Gypsy Rose
Reputation 1,390
#3 docwade931
docwade931
Reputation 1,250
View All

Related Models For Sale

Used Chevrolet HHR
66 Great Deals out of 2,551 listings starting at $1,800
Used Volkswagen Beetle
188 Great Deals out of 9,456 listings starting at $1,300
Used Chrysler Sebring
29 Great Deals out of 2,834 listings starting at $1,500
Used Ford Mustang
543 Great Deals out of 45,845 listings starting at $1,999
Used Chrysler 300
405 Great Deals out of 19,199 listings starting at $850
Used Honda Civic
812 Great Deals out of 88,108 listings starting at $1,299
Used Nissan Altima
1,153 Great Deals out of 79,677 listings starting at $500
Used Ford Focus
631 Great Deals out of 57,259 listings starting at $795
Used Toyota Camry
1,101 Great Deals out of 90,760 listings starting at $1,599
Used Honda Accord
947 Great Deals out of 77,739 listings starting at $899
Used Dodge Caliber
55 Great Deals out of 2,255 listings starting at $1,699
Used MINI Cooper
215 Great Deals out of 9,943 listings starting at $1,999
Used Toyota Corolla
851 Great Deals out of 70,589 listings starting at $1,874

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.