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Chrysler 200 2013 62te transmission with 3.6 V6 P0729 code and nothing else. Replaced oil/filter 2X and solenoid pack. All looks good. What is wrong?

Chrysler 200 2013 62TE with 3.6. Cruising in sixth if any load, kicks out of gear. Gives error code P0729. Usually only that. All other gears fine. Never a code if cleared and manually drive with just 1-5. Changed oil/filter 100,000. Started at about 115,000 seemingly locking up torque converter while in first gear when cold. Would stall. Replaced oil and filter again at 119,000. First gear issue went away but sixth gear issue started up. Just before this change it kicked out of 6th once and gave P0729 6th gear incorrect ratio. Thought perhaps if second oil/filter fixed first there may be clog and perhaps it would flush 6th. Old oil at 19,000 miles of running looked good. never did flush out. at 122,000 (always drive in 1-5) replaced Solenoid pack. Did not fix. All channels looked great. No junk, filter screens fine, oil clean still. Still yields P0729 6th gear incorrect. Did once so far yield a P1790 TPM mechanical circuit error. Because condition is so good inside and runs great otherwise, considering replacing TCC Solenoid and Line Pressure Sensor next. Any other causes for 6th gear only being an issue?

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  • Chrysler Master
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Code p 0729 refers to gear 6 --incorrect ratio===causes ---fluid level---wiring---TR( transmission ratio) sensor /switch---shift solenoids---transmission mechanical fault
the box is operational so no need for mechanical failure to figure in the diagnosis
if you never use 6th gear, it is possible that the solenoid may be a bit rust inside or a wire has failed from corrosion
at this point I would be checking wiring , connections and pins are not corroded and then consider the TR sensor / switch replacement

Posted on Apr 30, 2017

  • Paul Auman
    Paul Auman Apr 30, 2017

    OK--makes sense. I've very thoroughly checked and had checked the fluid levels. For myself using Dorman dipstick with MM measurements on charts by temp online. I check temperatures by DiabloSport Trinity with Trans Temp Gauge so think it's pretty acurate. I only avoid using 6th since this started, so symptom started before I started using only 1-5. Thanks for confirmation on several things. I'll dig a little further before ordering TR switch.

  • Mark Griffo
    Mark Griffo Jun 26, 2017

    did you get it fixed and what was the problem mine is doing the same thing

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Posted on Jan 02, 2017

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