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sprinkles08
sprinkles08, ASE Certified Technician
Category: Transmissions
Satisfied Customers: 22114
Experience:  Chrysler/Dodge/Jeep master tech ASE Master and Advanced Certified, Chrysler/Dodge/Jeep Master Certified, Trans Specialist
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I'm ***** ***** have a 2005 pt cruiser vin transmission

Customer Question

Customer: I'm ***** ***** have a 2005 pt cruiser B vin transmission issues not shifting properly or going into limp mode have changed tps , shift control selinoid' and the pcm .can it be the speed sensors
JA: Thanks. Can you give me any more details about your issue?
Customer: when not in limp mode it will either shift erraticaly or normal
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Submitted: 1 year ago.
Category: Transmissions
Expert:  sprinkles08 replied 1 year ago.

Hello and welcome to JustAnswer!

Yes, the speed sensors can definitely cause the trans to go into limp in. If the speedometer works while the trans doesn't shift that rules out the output speed sensor though.

The first step in diagnosing the problem is to see what fault codes are setting in the TCM. Do you know what codes are setting?

Customer: replied 1 year ago.
Well the speedometer works fine . Codes were p0891 , p0123 ,p0700 and p0713
Expert:  sprinkles08 replied 1 year ago.

Has anything been done with the trans relay or to diagnose the trans temperature sensor code?

Customer: replied 1 year ago.
trans relay was switched as well nothing for trans temp sensor
Customer: replied 1 year ago.
could the temp sensor be causing it as well?
Expert:  sprinkles08 replied 1 year ago.

There is an issue with the trans temp sensor or circuit, that's why the P0713 is setting.

Were the codes cleared after the trans relay was swapped and the P0891 came back?

Customer: replied 1 year ago.
Expert:  sprinkles08 replied 1 year ago.

If you clear the codes, remove the trans relay and start the engine what codes set then?

Customer: replied 1 year ago.
Cleared the codes removed the relay started engine got the p0891 replaced the relay after clearing again took a short test drive still in limp mode new codes are po562 and p0700
Customer: replied 1 year ago.
Just retested getting p0891 again
Expert:  sprinkles08 replied 1 year ago.

If you clear the codes, remove the trans relay and start the engine what codes set then?

Customer: replied 1 year ago.
The p0891
Customer: replied 1 year ago.
Could the O2S also cause limp mode
Customer: replied 1 year ago.
Just reset codes and started with relay out get po562 and p0700
Expert:  sprinkles08 replied 1 year ago.

No, an oxygen sensor can't affect the trans relay.

P0562 is just a low battery voltage code.

If the P0891 only sets with the relay in place and the relay is new then the issue is a short to ground on the relay control circuit, either internal in the TCM itself or in the wiring between the TCM and relay.

Customer: replied 1 year ago.
Suggested repair ? PCM is under warranty
Expert:  sprinkles08 replied 1 year ago.

You'll need to test for a short to ground on the control circuit when the code is active. If there is a short present then you can unplug the PCM and see if the short goes away. If it does then the problem is in the PCM, if not then the problem is in the wiring.

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