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Transmission Range Sensor Malfunction - P0705

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Old 01-15-2012, 12:49 PM
RoyalFord RoyalFord is offline
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Transmission Range Sensor Malfunction - P0705

Truck threw a P0705. I searched around the forums and first I cleaned the connection between the harness and the sensor b/c ppl said sometimes the connection just gets corroded / wet. Then the code came back one week later. So I replaced the TRS with a new one (Motorcraft).

The P0705 code still came back approx week later.

Normally the truck shifts great, but on occasion I feel a hard shift (< 5% of the time)

What do I check now? Seems like there may be a short somewhere... anyone have ideas?
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Old 01-15-2012, 02:33 PM
projectSHO89 projectSHO89 is online now
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It's highly unlikely to be a short since those cause smoke and blown fuses.

More likely, it's a faulty TRS connector or wiring harness fault.
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Old 01-15-2012, 02:38 PM
RoyalFord RoyalFord is offline
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ok so how do I debug the TRS connector or find a wiring harness fault?
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Old 01-15-2012, 11:43 PM
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Longdistancetrucker Longdistancetrucker is offline
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For diagnosis of code P0705 on an 4R70W transmission refer to this chart:

For diagnosis of code P0705 on an 4R100 transmission refer to this chart:


let me know what test you need and I will PM you the alldata page...
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Old 01-15-2012, 11:48 PM
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Longdistancetrucker Longdistancetrucker is offline
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just sent you a PM,

let me know if you'd like me to e-mail you a copy of the testing procedure.......
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Old 01-25-2012, 10:06 PM
RoyalFord RoyalFord is offline
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Thank you projectSHO89 and Longdistancetrucker. I had a Ford buddy that ended up looking at it. My tranny is a E4OD. The problem ended up being a loose connector in the distribution box beside the battery under the hood. The harness that runs from the TRS, then above the tranny, then around and clipped onto the passenger side valve cover eventually plugs into a connector behind the 175 amp mega fuses. One of the connectors has a small bolt in it and it was all the way loose. We tightened it up and no more codes!!

Check that connector!
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Old 03-22-2012, 01:07 AM
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ToMang07 ToMang07 is offline
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Quote:
Originally Posted by Longdistancetrucker View Post
For diagnosis of code P0705 on an 4R70W transmission refer to this chart:

For diagnosis of code P0705 on an 4R100 transmission refer to this chart:


let me know what test you need and I will PM you the alldata page...

Do you still have this chart? (For 4R100?)
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Old 08-13-2012, 10:45 AM
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I would like a copy as well, since I am currently fighting a transmission issue.
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Old 10-22-2012, 02:04 PM
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Hi all, any update w/ the charts? Throwing same code on 2000 Expedition E40D. noticed a new sensor at Autozone for $65. in your experience how often is this a sensor issue vs. a cable issue?
Thanks!
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Old 12-09-2012, 10:13 PM
rack-hunter rack-hunter is offline
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can the trs cause an overdrive malfunction by any chance?
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Old 12-10-2012, 06:53 AM
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All the TRS does is tell the computer what position the gear shift lever is in (in addition to the starter circuit in P or N).

It's likely possible to affect OD operation if the PCM thinks the lever is in some other position, especially if it's intermittent. You might want to clarify what your specific symptoms are.
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Old 12-10-2012, 07:43 AM
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The trs code has been there for a couple weeks but no immediate problems so I've procrastinated repair, I was driving, pulling a quad and trailer. Next thing I know if I get past 38mph the engine revs then gears back down. I pull the valve body to check for broken parts, snap rings, etc... Accumulator retainer ring seems to be missing... Hope this helps.
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Old 12-30-2012, 07:12 AM
RENOSEXPO RENOSEXPO is offline
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hey guys, a little help? 1997 expy 5.4 ive had an issue where i turn the key and i get no crank, the i cycle the shift lever and then the car will crank and start . recently i went to get gas , went to star and it wouldnt crnk so i did the usual and it didnt crank , changed the starter and it still wont crank and not sure what it could be all connections are good and power too. what else could it be?
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Old 12-30-2012, 08:54 AM
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Quote:
Originally Posted by RENOSEXPO View Post
hey guys, a little help? 1997 expy 5.4 ive had an issue where i turn the key and i get no crank, the i cycle the shift lever and then the car will crank and start . recently i went to get gas , went to star and it wouldnt crnk so i did the usual and it didnt crank , changed the starter and it still wont crank and not sure what it could be all connections are good and power too. what else could it be?
You should start a new thread for this RENO
Good luck!
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