Code P0713 transmission temperature sensor

Tiny
JUNIOR JUNIOR2
  • MEMBER
  • 2010 KIA SOUL
  • 2.0L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 94,400 MILES
Had engine light with code p0713 popped up, it went into limp mode. So asked local shop if they give me quote, they did said most very likely sensor needs replacing according to they information they had. I Decided to test temperature sensor, seemed to be within specs until it reached operating temp at 178f+ at 3.44kohms, should be approx 1.08kohms, no over heating either, no burn fluid either. Finally took it to trans shop they replaced temp sensor w/ wire harness, code persists p0713 - high input A circuit electrical. Shop told me possibly bad PCM/TCM, maybe external wires. Any ideas? I figure sensor was acting up anyway but doesn't seem damaged and old harness looks okay upon inspection of solder points/connections. Didn't think much of it but I did have small amount of water pool in floorboard through sunroof that didn't drain properly, didn't consider it cause this issue since PCM/TCM/ECU is located by battery under hood anyway, right?
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Friday, June 28th, 2019 AT 11:41 AM

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Tiny
KEN L
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Yep, I would check the connections between the transmission and PCM before replacing the PCM. here is a guide to help you with the transmission wiring diagrams so you can see how it works and what to test:

https://www.2carpros.com/articles/how-to-check-wiring

Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
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Saturday, June 29th, 2019 AT 7:46 PM
Tiny
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Hey Ken, looks like only.01v at temperature sensor connection from PCM, so went to connector at PCM and found plug was slightly corroded and nearly impossible to unplug and cover was slightly loose on connector but no corrosion inside just sprayed some lube. Made sure it's secured and no loose wires, problem solved! No check engine light on, cleared codes with obd scan tool but still car is in limp mode. Not sure how to clear or flash or reset it, or update any TCM software etc. Any thoughts on that? If I use diy diagnostic 20pin plug connect in at engine side under hood, will that allow me to clear flash trans? I still think original temperature sensor was not reading right at operating temperature so probably needed replacing.
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Sunday, June 30th, 2019 AT 7:07 AM
Tiny
KEN L
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Good find on that, the car may need to be reprogrammed now it should cost about $130.00. But to be sure lets clear the codes, then turn the key on and run the codes again.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please run down this guide and report back.
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Sunday, June 30th, 2019 AT 11:20 AM
Tiny
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Well, unfortunately nothing helped. I tried removing fuses, unhooking battery terminal, erasing codes and nothing came back but transmission still in limp mode with no codes of any kind. I wish I had 20pin k-link tool to connect to diagnostic port under hood to flash and reset and return TCM Into normal. Not sure if obd type scan tool with 20pin adapter might do the trick? Otherwise, take it to dealer for PCM/TCM reprogramming and software update, right?
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Sunday, June 30th, 2019 AT 3:59 PM
Tiny
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BTW- I wonder why none of the TSB's specify reprogramming for temperature sensor replacement, not the specifically for this type sensor within wire harness transmission à 4cf2 nor the '11 type with one screw in type with trans a6cf1, is it only required if transmission goes into limp mode? Everything I read seems like if transmission temperature sensor related repairs calls for no reprogramming, just plug-in and play.
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Sunday, June 30th, 2019 AT 5:42 PM
Tiny
KEN L
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If you remove the electrical connector from the transmission and turn the key on the car will need to be reprogrammed. To be sure we should do a CAN scan to check the systems.

Here is a video that will show you how:

https://youtu.be/InIlnsjOVFA

Please run down this guide and report back.
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Monday, July 1st, 2019 AT 11:11 AM
Tiny
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Sure be nice to have access to this type of scan tool but nothing like that around, best I could do was get obd scanner with and etc, maybe limited can ability but couldn't access anything other than codes that came up again, even though light was off, they seemed to be there, erased and popped up again before even running car, they were no codes after clearing and now they seem to be hard stored in ECU. Will need to verify if.01v or 5v is present at trans plug again. That's probably why limp mode is still in effect due to set codes.
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Tuesday, July 2nd, 2019 AT 5:39 AM
Tiny
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Here is what I think: sensor likely failed and stored perpenant codes, maybe slightly loose wire as well, I may need to clear them, and then do trip drive pattern with specific procedure to remove any permanently stored codes and see if it clears everything and limp mode, seems like light goes off and returns due to permenmanet set codes.
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Tuesday, July 2nd, 2019 AT 7:05 AM
Tiny
KEN L
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That tool is new but the dealer can do the job for about $130.00. I have never heard of permanent codes, I forgot to ask how did the wire testing turn out? Got to be a connection or defective sensor.
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Tuesday, July 2nd, 2019 AT 3:22 PM
Tiny
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Here's update: cleared all codes double checked PCM/TCM module sprayed lube at two terminals and checked at transmission plug got approximately 3.4v at +/- temperature sensor, had pending codes, no check engine light, it eventually popped up again. Noticed esc light on as well, it's prob been on for while, seems like bad wire connection at this point but still in limp mode, same codes, need to check if wire is corroded etc.
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Tuesday, July 16th, 2019 AT 12:13 PM
Tiny
KEN L
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Yep, did the pin to pin testing the the wiring turn out okay? Also is it the same code?
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Wednesday, July 17th, 2019 AT 11:58 AM
Tiny
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Well here is what I discovered, +/- at trans plug for temp sensor don't match diagram, instead of pink+/greenW/orange-, it's light grey /blue -. Also probed #6 temp sensor (+) shows power 4v approx. But when using #7 (-) but only.02v when probe #5 (-), same with #6, same goes for #5 shows - when I probe other pins like #1, #2 etc. So power is going to those wires. And pcm seems fine since I got replacement unit at junkyard for $5 to try and same codes pending p0713, with p0765 following afterwards. I feel as if something else im missing here that's simple or easy solution, some switch or relay or something that maybe went bad when original temp sensor "failed". Also, not sure but #2 trans wire for 2-4brake is listed as temp sensor, how it plays in this role? Also, what else feeds into this whole "temp sensor" function? I did have shift cable that broke and I had shifter in "park" but used the trans selector in "neutral" to start and move it manually by hand under the hood, maybe that shift selector switch solenoid failed that's on top of trans which attaches to shift cable? Seems like bit after that all this started, maybe related or not?
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Friday, July 19th, 2019 AT 9:51 AM
Tiny
KEN L
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P0713 circuit high so the sensor has gone bad or the wiring is not right. Lets recheck the connections. Check out the diagrams (below). Please let us know what happens.
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Friday, July 19th, 2019 AT 5:22 PM
Tiny
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Seems like the #5 ground wire towards the trans connector, voltage seems to swing wildly if I massage and play with it approx 6-10" from connector plug going up, .20v to 3-4v depending on how it's bent and twisted, not sure if it's rotted in the sheathing or what but will unravel that wrapped tape to expose the 10wires but #5, maybe #6 or both shorting or grounding out. Seems like that's the prob area there. Thanks
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Monday, July 22nd, 2019 AT 4:51 PM
Tiny
KEN L
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Yep you found it bad harness it sounds like. Please let us know if you need anything else to get the problem fixed.
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Tuesday, July 23rd, 2019 AT 12:51 PM

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