C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe

Limp Mode P0715 code C320

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Old Apr 12, 2011 | 07:55 AM
  #1  
ryerye26's Avatar
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2004 C320 Wagon
Limp Mode P0715 code C320

I have a 2004 C320 wagon. I was getting the p0715 and p0730 error codes so i changed the contactor plate above the valve body and the connector.

now Im just getting the P0715 code everytime I drive it and its stuck in Limp mode (stays in 2nd or 3nd gear, clunks into gear hard)

when i hit the "C" or "S" on the shifter it doesnt do anything. Just stays in "C" and when i put it in Drive and try to shift down it doesnt do anything. just stays in "D"

I checked the fuse for the trans computer and its fine. I looked at the connector harness that plugs into the trans and that appears to be ok.

I searched this forum and I found alot of info but nothing is working. Im about to have it towed to a independant MB shop

any help would be appreciated.

thank you
Rye
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Old Apr 12, 2011 | 08:47 AM
  #2  
phister's Avatar
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From: fort worth, tx
06 C230 SS 6spd
did you have the codes cleared after you changed the part?
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Old Apr 12, 2011 | 09:09 AM
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2004 C320 Wagon
Originally Posted by phister
did you have the codes cleared after you changed the part?


yes. I have a code reader (not a scanner) and I have cleared the code many times and it comes back

rye
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Old Apr 12, 2011 | 09:31 AM
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
P0715 = Input/Turbine Speed Sensor Circuit Malfunction.

This is not an easy one to answer. Sometimes all that is required in this situation is readaption with a Star.

Let's see what others have to say.
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Old Apr 12, 2011 | 09:44 AM
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2006 C350 Sport 6MT
P0175 should be the trans speed sensor. It's located in the conductor plate.
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Old Apr 12, 2011 | 09:45 AM
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2006 C350 Sport 6MT
Glyn mentioned a good point. Got me thinking..when you erase code does it get erased and comes back? Or it doesn't get erased at all?
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Old Apr 12, 2011 | 09:49 AM
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2006 C350 Sport 6MT
I just checked online. I could only find this.
http://www.justanswer.com/mercedes/3...ircuit-is.html

Not much help but worth a try.
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Old Apr 12, 2011 | 10:11 AM
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2004 C320 Wagon
Originally Posted by Karo
Glyn mentioned a good point. Got me thinking..when you erase code does it get erased and comes back? Or it doesn't get erased at all?
I can erase the code, the "check engine" lights goes out but when I start it its still in limp mode and the check engine light comes back on.

I have replaced the eletronic plate on top of the valve body.
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Old Apr 12, 2011 | 07:49 PM
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I'm just throwing this out here - is it possible a leak from the known faulty pilot bushing is causing false errors?
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