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Codes P0705 and P0685, automatic transmission problem car does not Move?

Tiny
BOB JO
  • MEMBER
  • 2013 HYUNDAI AZERA
  • 3.0L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 60,000 MILES
Hi, I changed Automatic Transmission and the car start engine but don't move on D or R directly engine off.

Please I need help !
Tuesday, June 25th, 2024 AT 12:07 PM

7 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 45,347 POSTS
So, with these codes it can make it so the transmission will not work, especially the first code.

P0705 - Transmission Range Sensor Circuit Malfunction (PRNDL Input)

P0685 - ECM/PCM Power Relay Control Circuit /Open

The first thing I would do is make sure the system grounds are connected and the gear range sensor is plugged in, here is the location so you can check it out. Check out the images (below). Please let us know what happens.
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Tuesday, June 25th, 2024 AT 1:57 PM
Tiny
BOB JO
  • MEMBER
  • 4 POSTS
Thanks for your answer, I changed the Transmission Range Sensor but the problem still. When I checked the oil in AT I don't found oil!

Is that the main problem?
I put 4ltr mobis oil IV, but still problem !
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Tuesday, June 25th, 2024 AT 5:36 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 45,347 POSTS
Yep, then need fluid to work, do you have the correct fluid level now? Also did you clear the codes after replacing the neutral safety switch? Also, can you double check to make sure the CV axles are plugged into the transaxle completely?
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Wednesday, June 26th, 2024 AT 10:10 AM
Tiny
BOB JO
  • MEMBER
  • 4 POSTS
Hey, first question, now the level correct. Second question, I cleared the codes now the OBD check no codes. Third question, the CV axles plugged completely. But the problem is still when I turn on the engine and try to drive on D or R the eng forced off.

But now after put oil to AT the car better than before. When turn on and off eng more than once time the AT working. But when I turn off eng the problem came again !
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Wednesday, June 26th, 2024 AT 12:45 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 45,347 POSTS
It sounds like the torque converter has fallen apart internally. But we can try the replace the valve body solenoids to see if that helps. Can you upload a short video of what the problem is? Check out the images (below). Please let us know what happens.
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Thursday, June 27th, 2024 AT 9:56 AM
Tiny
BOB JO
  • MEMBER
  • 4 POSTS
Thanks for your help, when I replace AT I put a used AT from the garage, so now I have returned the AT and replaced another one. Now the car is normally by the second AT. Thank you again.
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Sunday, July 7th, 2024 AT 1:13 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 45,347 POSTS
Good to hear, you must have gotten a defective unit the first time. Thanks for letting us know, we are here to help, please use 2CarPros anytime.
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Monday, July 8th, 2024 AT 9:49 AM

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