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P1740 trouble code on a 2001 Dodge Ram 1500

Recently, i had two trouble codes come up on my truck. One was for the governor's sensor and the TCC (torque converter clutch). I took my truck to an auto repair shop and was told that i needed to replace the gov. sensor and the gov. solenoid, so i did. Two days later the check engine light came on again with a code of a P1740, (TCC). What is the problem now? I was told that the there is 2 torque converter solenoids but was also told that there is only one that contains the TCC/o/d lock out all in one. Can you please clarify this for me. Thanks, kim

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  • Anonymous Apr 01, 2014

    location of clutch converter solnoid

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There is one solenoid assy with two solenoids on it. One for the TCC and other for OD. in my experience, P1740 is caused by a couple of things. The torque converters are a subject of trouble for one - I always replace them - the other are the input sealing rings on the input shaft. Older designs leak pressure. Always replace with the plastic - **** end type which is the update today. P1740 has nothing to with the governor solenoid or sensor

Posted on Apr 02, 2009

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The only time I have ever seen the gov pressure sensor code is if the wrong fluid was used (atf+4 only) the torque converter lock up is in the torque converter,and then it goes into "limp" mode where 1st and 2nd are locked out and 3rd 4th and od work ok if you had the tranny serviced by other than a dealer ask if they used atf+4 only as some garages are using dexroniii with an additive which will not work well.

Posted on Jan 10, 2009

  • Justin_8125 Mar 22, 2012

    I put Lucas in my trans know this code comes up did I burn up my sensors or can I just change fluid and be ok

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1 Answer

2000 dodge ram 1500, V8 with a obdll code of P1740. what does that mean?


P1740 DODGE Torque Converter Clutch or Overdrive

You are having a Transmission Issue. There is a known issue with the TCC Lock-Up Solenoid. Once you Clean and Replace the Solenoid, your problem will go away (95% sure)

Apr 15, 2013 | 2000 Dodge Ram 1500 Truck

1 Answer

P1740 code on 2001 ram 1500 tcc-overdrive solenoid . how to test & replace


there is a total of 27 diagnostic steps to follow, but here is some info for you:
SYMPTOM
P1740-TCC O/D SOL PERFORMANCE

WHEN MONITORED
The Torque Convertor Clutch (TCC) and Overdrive Clutch (O/D) will be tested each time the PCM requests TCC engagement in 3rd gear and O/D.

SET CONDITION
The code will set if the expected RPM drop is not achieved while attempting to engage TCC or O/D. This indicates a malfunctioning torque convertor or overdrive clutch.

POSSIBLE CAUSES
- Camshaft DTC present
- Engine RPM DTC present
- Fuel level low
- Misfire DTC present
- Output speed DTC present
- P1765 DTC present
- Park/Neutral DTC present
- PTO engaged (if equipped)
- Torque converter clutch DTC present
- TPS DTC present
- Transfer case in low range (if equipped)
- Transmission Relay DTC present
- Transmission temperature too cold
- Intermittent
- Check transmission fluid-debris
- Check transmission fluid-stall
- 3-4 Shift Solenoid
- Oil Pan contains excessive debris
- Shaft or seal damage
- TCC solenoid
- Torque converter
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Jun 03, 2011 | Dodge Ram 1500 Cars & Trucks

1 Answer

My 2007 dodge with 5.9 diesel is showing engine malfunction light and error code of P1740, failed TCC or overdrive solenoid. The truck seems to run ok in overdrive but I don't understand what the TCC...


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.

NUMBER: 21-11-00
GROUP: Transmissions
EFFECTIVE DATE: October 02, 2000
SUBJECT: 46RE Transmission MIL Due To DTC P1740 - TCC or OD Solenoid Performance
OVERVIEW: This bulletin involves the replacement of the transmission pressure boost valve cover plate.
MODELS: 2000 - 2001 (AB) Ram Van 2000 - 2001 (AN) Dakota 2000 - 2001 (BR/BE) Ram Truck 2000 - 2001 (DN) Durango

NOTE: THIS BULLETIN APPLIES TO VEHICLES EQUIPPED WITH A 46RE TRANSMISSION BUILT BEFORE AUGUST 01, 2000 (MDH O8O1XX).

SYMPTOM/CONDITION:
The customer may complain of a Malfunction Indicator Lamp (MIL) illumination. Upon further analysis, it is determined that the MIL is caused by Diagnostic Trouble Code (DTC) P1740 - Torque Converter Clutch (TCC) or overdrive solenoid Performance. Other than the MIL, the customer may not notice any other condition with the transmission.

This condition may be caused by an intermittent and momentary TCC disengagement condition. The transmission valve body pressure boost valve cover plate has been revised with a larger size orifice hole to address this condition.

NOTE: THE DRB III(R) MUST BE OPERATING AT RELEASE LEVEL 50.4 MDS2 SYSTEM CIS CD2067 OR HIGHER (AVAILABLE THE WEEK OF OCTOBER 2, 2000) IN ORDER TO PERFORM THE REVISED TORQUE CONVERTER CLUTCH STALL TEST. DO NOT USE EARLIER VERSION STALL TEST TO DETERMINE CONDITION OF THE TORQUE CONVERTER CLUTCH.

Here can find the test in pdf format: 2009-11-28_034958_1124.pdf

Hope helps.

Apr 28, 2011 | Dodge Ram 3500 Cars & Trucks

1 Answer

Po748 can tcc solenoid or vehicle speed sensor cause this code


One question? Did you clear the codes out of the system with a scanner? I believe that's the only way to do it now,unlike the old days when you could rest by disconnecting the battery. Hope this helps.

Apr 22, 2010 | 2001 Dodge Ram 1500 Truck 2WD

1 Answer

Truck (2001 Dodge Ram 1500) runs fine. Check


I found that the code is set for:

P1740....TCC Solenoid or Overdrive Solenoid performance

which indicates that a rather inexpensive fix is in order, not a complete transmission replacement!! The TCC is the solenoid which controls the locking of the transmission converter so that you get better gas mileage with no "slippage" while at highway speeds, which is normal when the converter is unlocked as you slow down. If it is locked and the solenoid fails to release it the car will stall when you come to a stop since the fluid in the converter fails to act as a clutch and the engine is connected directly to the transmission input shaft. If it never locks then the oil in the transmission will overheat at highway speeds since ther "slippage" will always be present in the converter cauasing frictional heating of the oil.

Whenever you get a quote from a shop ALWAYS get at least two more!!! No matter what the job is, even a muffler replacement get many quotes. Go to a reliable transmission repair shop and ask for their opinion. In my humble opinion the shop that told you that you need a new transmission is just hungry for work - stay away!!!!

Bob

Apr 21, 2010 | 2001 Dodge Ram 1500 Truck 2WD

1 Answer

How to fix codes P1740 & P1281


error code p1740 on 2001 dodge ram pickup

Feb 15, 2010 | 2001 Dodge Ram 1500 Truck 2WD

1 Answer

WILL THE P1740 CAUSE SLOW SHIFTING AS WELL?


yes,You need to have a shop check this problem out,
P1740=TCC solenoid or overdrive solenoid performance,

that is your torque convertor clutch solenoid.

Jan 18, 2010 | 2001 Dodge Ram 1500 Truck 2WD

1 Answer

Trouble code P1740 on 1999 Dodge Ram 2500


I had the same code on my 2001 dodge 2500. The truck wouldn't shift from 3-4. I pulled the trans pan off and replaced a broken spring ($2.00). It is behind a thin plate with 3-4 small torq screws. You don't have to remove the valvebody. Only took me 45 minutes to fix.

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.

Mar 15, 2009 | 2004 Dodge Ram

1 Answer

My 2001 Dodge Ram 1500 keeps giving me trouble codes with the latest one being a P1740. The code before was for the governor sensor which i have had replaced both the governor sensor and the governor...


For a few years, at least in my area, there was a issue with the tcc solenoid. It involved not only replacing the solenoid( dropping the pan and unbolting from the valve body) but also flashing or updating the control module.once both repairs are complete you should have no problems. A good dealer will help you out.

Dec 06, 2008 | 2001 Dodge Ram 1500 Truck 2WD

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