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Troublecode 643 MLP sensor

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Old Dec 27, 2003 | 04:09 PM
  #1  
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bigbadjs
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Troublecode 643 MLP sensor

Recent check revealed the above trouble code. Whats the common cause of this code?

Could the sensor be out of adjustment? How do you adjust it ?

Could it be a bad connector?

What are the symptoms that usually go along with this troublecode? Is it likely to be the cause of my pinging?

No doubt this will be a dealer only part. So whats the cheapest way to deal with this code?
 
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Old Dec 27, 2003 | 09:03 PM
  #2  
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Are you getting 643 or 634 ?

643 is Torque Converter Clutch (TCC) circuit while 634 is the MLP sensor.
 
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Old Dec 27, 2003 | 09:13 PM
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Good catch there slade. You are right, I meant code 634 .
 
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Old Dec 30, 2003 | 12:19 AM
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Do you know anything about this MLP sensor?
 
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Old Dec 30, 2003 | 12:22 AM
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It's the big connector on the side of the transmission, it tells the computer what gear your in among other things.
 
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Old Dec 30, 2003 | 07:26 AM
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Here's other problem related to that 634 error code.
(R) = Engine Running test (M) = Memory code (O)=Key On Engine Off test

634 (O,M) = Park/Neutral Position (PNP) or Clutch Pedal Position (CPP) circuit fault Electronic shift transmission - Manual Lever Position (MLP) sensor out of range in Park-Transmissions

Now sure where to go from here but I would try to remove the connectors and clean them and see if that makes a difference.
 
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