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Code P0712, do I just change the fluid and filter or replace the transmission?

Tiny
RONALD DEVOLD
  • MEMBER
  • 2006 PONTIAC GRAND PRIX
  • 3.8L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 201,000 MILES
I have a P0712 transmission Code along with P0300 misfire code. I need help with the P0712 code. My question is, do I just change the fluid and filter or replace the transmission?
Also, the code refers to a transmission temperature sensor on which I don't know where its located.
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Saturday, May 27th, 2023 AT 3:13 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,269 POSTS
Hi,

I don't feel the transmission needs to be replaced. Also, the fluid itself isn't the cause. You likely have a short in the wiring harness to the transmission.

I attached diagnostics below for you. Take a look through them and let me know if you are comfortable performing them.

Let me know.

Take care,

Joe

See pics below.
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Monday, May 29th, 2023 AT 7:41 PM
Tiny
RONALD DEVOLD
  • MEMBER
  • 93 POSTS
Thanks. I cleared the code, and I changed the fluid and filter. It's been a few days since and the code did not come back, but a slight drag when shifting.
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Wednesday, May 31st, 2023 AT 3:51 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,269 POSTS
Hi,

Thanks for the update. If things change, let me know. Also, feel free to come back at any time in the future.

Take care,

Joe
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Wednesday, May 31st, 2023 AT 9:21 PM

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