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Transmission will not shift out of first gear and code P0722?

Tiny
SSANGEL
  • MEMBER
  • 2011 JEEP PATRIOT
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 107,534 MILES
Code P0722 for output shaft sensor no signal, I have 12 volts and ground with the reference. I changed the output sensor, but it still won't shift. My primary and secondary pulled RPMs will not change. Does anyone know anything about this? I pulled the transmission pan and there were a small amount of shavings.
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Thursday, July 28th, 2022 AT 7:03 PM

5 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Hi,

Where are you getting 12v? The speed sensor output voltage should be less than.05v when the vehicle isn't moving. To me, it sounds like you have a short to voltage.

Do me a favor. Perform the test in the attachment below. Let me know the results.

Take care,

Joe
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Thursday, July 28th, 2022 AT 10:15 PM
Tiny
SSANGEL
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  • 4 POSTS
I have 12 volts for pin 3, .02 volts for pin 2 and ground at pin 1.
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Friday, July 29th, 2022 AT 5:30 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Hi,

Okay, that sounds like everything is correct. What I've done is attach the diagnostics specific to this code. I am attaching all of them because I feel you have already done some of them.

Take a look through them and let me know if you have questions and what you find.

Take care,

Joe

See pics below. Note: Each pic is a test. I have them in order and separated for you.
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Friday, July 29th, 2022 AT 8:46 PM
Tiny
SSANGEL
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  • 4 POSTS
I have done all of the test everything tested correctly when I manually shift the transmission, I have found that going into 4th gear will result in whining and growling from the transmission. There is most likely issues internally with the transmission.
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Friday, July 29th, 2022 AT 10:36 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Hi,

It's very possible. Is the P0722 the only code? Have you checked again recently? Also, is the sound you hear when shifting manually loud enough for you to record and upload so I can hear it?

Let me know.

Joe
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Saturday, July 30th, 2022 AT 7:31 PM

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