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

3,580

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

Chrysler PT Cruiser Experts

  • #1
    Tom Demyan
    Reputation
    2,670
  • #2
    Gypsy Rose
    Reputation
    1,530
  • #3
    Kelly Little Ashford
    Reputation
    1,420
View All

Related Models For Sale

Used Chevrolet HHR
33 Great Deals out of 2,456 listings starting at $1,895
Used Toyota FJ Cruiser
51 Great Deals out of 2,042 listings starting at $7,994
Used Volkswagen Beetle
210 Great Deals out of 8,875 listings starting at $1,295
Used Ford Focus
749 Great Deals out of 61,257 listings starting at $900
Used Chrysler Sebring
26 Great Deals out of 2,705 listings starting at $700
Used Chrysler 300
324 Great Deals out of 19,325 listings starting at $900
Used Honda Civic
773 Great Deals out of 60,518 listings starting at $950
Used Chrysler Town & Country
338 Great Deals out of 13,378 listings starting at $1,999
Used Dodge Caliber
57 Great Deals out of 2,118 listings starting at $299
Used Ford Mustang
597 Great Deals out of 38,611 listings starting at $1,895
Used Honda Accord
1,094 Great Deals out of 71,806 listings starting at $850
Used Dodge Charger
444 Great Deals out of 32,879 listings starting at $1,999
Used Honda CR-V
838 Great Deals out of 58,481 listings starting at $1,495
Used Toyota Corolla
934 Great Deals out of 63,275 listings starting at $1,850

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.