Question about 2005 Dodge Ram 3500

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Error codes my truck is showing this error code and i was wondering if you could tell what it means. its a 2004 dodge ram 3500 the error code is P1740

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  • pjsrt Feb 26, 2009

    OUR 2000 DODGE R/T KEEPS ON GETTING CODE P1740, we repl. tcc and o/d solenoids, no luck

  • Anonymous Mar 31, 2014

    Error code of 0456 and 0457 and 0300

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Her is the definition and a list of possiable causes.


Code P1740-Torque converter clutch did not lock up when the PCM sent the command. Enabling conditions: No engine or transmissions codes are present, vehicle speed was under 70 MPH, TPS was under 33% open. When the PCM commanded the torque converter to lock, no change was detected in engine speed. Blocking action: This code can block the following monitors: none.
Testing: Check torque converter solenoid for proper operation.
P1740 TCC O/D SOL PERFORMANCE (GAS)
Theory of Operation
The Torque Converter Clutch (TCC) Solenoid is used to engage the TCC which improves fuel economy.
When Monitored
The Torque Convertor Clutch (TCC) and Overdrive Clutch (OD) will be tested each time the PCM requests TCC engagement in 3rd gear and OD.
Set Condition
The DTC will set if the expected RPM drop is not achieved while attempting to engage TCC or OD. This indicates a malfunctioning torque convertor or overdrive clutch.
Possible Causes
* ENGINE DTCS PRESENT
* TRANSMISSION DTCS PRESENT
* TRANSMISSION TEMPERATURE TOO COLD
* OIL PAN CONTAINS EXCESSIVE DEBRIS
* 3-4 SHIFT SOLENOID
* SHAFT OR SEAL DAMAGE
* TCC SOLENOID
* TORQUE CONVERTER

Posted on Sep 25, 2008

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Is it auto or manual?? If it's manual I would say your clutch has thrown in the towel, if it's auto if could be transmission oil dirty and will need replacing, hope this helps

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I would like to give thanks to Jeff Russel from Teal automotive. He said this is a very common problem. He sells any part for any automatic Transmision and his prices are very affordable.
Here is a link to the website.
http://www.tealautomotiveinc.com/

Hope this helps.

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