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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 08-03-2007, 03:28 PM   #1
riznphoenix
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Join Date: Oct 2006
Location: Phoenix, AZ
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My Ride: 2001 330i
P0705

Hey Guys,

We are going through monsoon season over here in Phoenix and it rained pretty hard. I went through a puddle and ever since that my car won't shift right there is an exclamation point where it shows what gear you're in and I ran the OBD and it came up with P0705 which is Transmission Range Sensor Circuit Malfunction (PRNDC Input). I saw a couple of other posts on that but no resoulution. I actually just put a brand new tranny in it so I'm hoping all have to do is replace that. Any stories?

Thanks guys

riznphoenix
2001 330i
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Old 08-03-2007, 04:27 PM   #2
ssm1991
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You're in luck my friend. I've been in this forum several months and you're only the second one (after me) that had this problem.

It's an easy part replacement: 3C Gearbox switch (P0705), partnum 24-10-7-507-818.

It's #9 (position switch) in this diagram from RealOEM: A5S325Z HOUSING WITH MOUNTING PARTS.

Mine was damaged because I mistakenly took the car to a high-pressure underchassis wash, so similar causes to yours.

Replace it right away. I ignored it for several days. The third time I went on limp-home mode, I couldn't even start the car -- the tranny warning lamp was just lit and didn't even display the gear position (P,N,D). Sort of like a three-strikes-you're-out thing the ECU does.

If your scan tool can reset codes, you can DIY it.
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Old 08-03-2007, 04:33 PM   #3
ssm1991
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Or maybe even just try to dry and clean the connectors with electronic cleaner spray. Maybe the connector wasn't locked/sealed right when your tranny was replaced so water got into it. It's supposed to be water-proof.
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Old 08-03-2007, 05:25 PM   #4
ssm1991
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Quote:
Originally Posted by ssm1991 View Post
... you're only the second one (after me) that had this problem ...
Correction, you're the third one. Happened to another guy too: P0705 Code.

Good news is the solution was the same as mine. Bad news is it's $387 including labor if the dealer does it.
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Old 08-03-2007, 05:41 PM   #5
riznphoenix
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Awesome. I have an extended warranty on my car that covers all that, so I am going to take it in on Monday and get it fixed. Thanks man
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Old 11-08-2007, 05:30 PM   #6
hil357
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bump! the part is aobut $160, right? is this something you can do yourself...? i got the code tonight
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Old 11-08-2007, 05:55 PM   #7
silentak1
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If the $160 deal isn't real, Tischer BMW has it for $189.

Mileoneparts.com ---> 24-10-7-507-818
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Old 11-08-2007, 07:15 PM   #8
hil357
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so labor is about $200..?
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Old 01-02-2008, 11:41 AM   #9
Nique88
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Quote:
Originally Posted by hil357 View Post
so labor is about $200..?
Man I took my 2000 328ci to AAMCO. They couldnt even tell what the problem is. They replaced my gearbox and also the transmission and yet its still has the same problem. There is this burning toxic smell and RND and the SD and the M1...5 does not show. When the Error Symbol comes on the S D shows but the PRND does not.

I got the P0705 code and I saw on here that you guys have the same problem or similar. I have reported to AAMCO what u did. If they F up my ride I will report them to BAR.

Thanks. I will give u guys more updates...
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Old 11-19-2009, 10:19 PM   #10
eweis
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Sorry to bump an old thread but I'm having this problem.
Actually, I just got my codes read and it came back with this one and 18 !! other codes (about 14 unique ones). All are Px7xx codes which means all are transmission-related codes. My car is a '99 328i with 125k miles.
Anyone ever have so many tranny codes getting thrown at once? I don't know where to start but on the other hand, it hasn't seemed to drive poorly other than I noticed today sort of a strange whining when accelerating.

Here are some of the codes:
p1750, p1751, p1749, p0705, p0727, p0732, p0733, p0734, p1747, p1748, p1781, p1765, p0758, p0763

Last edited by eweis; 12-07-2009 at 10:58 PM.
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Old 11-16-2010, 09:55 AM   #11
karrowack
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Damn it all..

A local Mechanic recently replaced my shifter assembly after my 323i would not shift into gears. Now I have the code P0705 also now appearing days after but with no warning light in the car. How I found out about this was a fault code appeared during my State inspection on their OBD scan. Not sure how long that faulty sensor will let me drive the car..but I am depending on it for sure, so I am going to replace it.

Just thought I would also report my problem. I think it helps for everyone to see the logistics and outcomes of everyones situation when dealing with problems on their own.
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Old 11-07-2011, 03:13 PM   #12
bwaymire
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I got a P0705 error code after replacing the starter on my BMW323i. I read the following from Ricks free autorepair.com site "A monitoring switch is attached to the transmission where the shift cable attaches. This switch tells the computer what gear you selected. If the switch is out of adjustment, you will get

P0705 Transaxle range switch circuit malfunction (PRND321)

Here's how to adjust the switch to get the codes to go away

1) set the parking brake
2 Remove the air filter box assembly so you can access the transmission range switch.
3) Turn the key to the ON position, but do not start the vehicle. Move the shifter to the neutral position.
4) Align the alignment holes between the switch and the shift lever. Insert a 5mm drill bit into the adjustment hole to verify the proper alignment for the neutral position.
5) If the bit won't fit, the switch is out of alignment. Loosen the bolts and move the switch until you can insert the drill bit. Tighten the bolts to 96 INCH/lbs."
This fix seems easier than replacing the switch and I think we probably caused the problem when replacing the starter. Anyone concur?
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