Question about 2001 Dodge Ram 1500 Truck 2WD

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Code 1740? I've replaced the motor, rebuilt the trans, had the TCC solenoid & O/D solenoid replaced. I need to get this truck inspected, NY state wont let it pass with the engine light on. It went through last year on a one time only waiver. I'm tired of the light, please help.

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If you disconnect the battery for a minute or two the PCM and TCM will reset. If the light doesn't come back on right away, either the problem no longer exists or the conditions to set it haven't been met. One trick to get it to pass if it takes a while to come on is to drive within a block or so of the inspection station, stop and disconnect and reconnect the battery to turn the light off, then on to the station for the inspection. I know it doesn't fix the problem but it might get it through the inspection.

Posted on Oct 01, 2009


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My 1998 Volvo V70 XC with 173k has the Check Engine Light on. The code is P0740 Torque Converter Clutch Malfunction. The shifting of the transmission has been normal for over a month since the CEL came on....

Like all vehicle issues & code related issues, the code
is used to diagnose the problem

In this case a trans converter lock-up solenoid or internal problem

WHY -- Why would you drive ANY vehicle a MONTH with any codes
present or dash light lite?

A trans related issue is a death sentence for a trans

1998 for me personally & I once owned a trans shop

I would just pull the trans & rebuilt it-IF- it is original off the
assy line, as built,never replaced since new

You can try to diagnose the TCC Solenoid code & work
on that IF you can get to it

I have no idea what trans is in the car or it's parts location

Try dragging the brake pedal while still on the gas & going
over 42 miles per hour in high gear
The brake switch should turn off the tcc solenoid, if it works
& the valves it actuates work & I doubt it does
That test will turn off the converter clutch & your rpm should
go up a little

I would guess the valve body in which the valve slides is worn

Jul 15, 2014 | 1998 Volvo V70

1 Answer

Code p0753 for a dodge ram 2500 360 m

Both fault codes refer at Tnasmission problem...

P0743 - Torque Converter Circuit Electrical
This DTC appears when an open or shorted condition is detected in the TCC (Torque Converter Clutch) solenoid control circuit; check this as possible causes:
- fused ignition switch output circuit open
- torque converter clutch solenoid defective
- TCC solenoid circuit w/h intermittent defect
- TCCsolenoid circuit w/h observable defect
- TCC solenoid control circuit open
- TCC solenoid control circuit short to ground
- PCM defective (TCC solenoid control circuit)

You will need remove the cover/pan to inspect the harness that goes to all the solonoids and then to inspect the valvebody and the TCC solonoid itself. If you have a multimeter then you could ohm through the harness and even the solonoid. I have found that most of the time this code was produced because of the solonoid itself. But it could be the circuits to it also. There is abig connector an top of the trans that goes into the trans and the internal harness ispect that connector for any corrosion or damaged pins or wires.

P0753 - Shift Solenoid A Electrical Malfunction
This is a common repair that I have replaced several of the solenoid but it is not a cronic problem. It be the wire going to the solenoid shorted so make sure that is check before the transmission is tilted down and the side cover removed. 90% it is just the solenoid; the solenoid is located in the side pan of the tranmission. It would mean lowering the cradle(what the engine and transmission sit on) and lowering the transmission down about one to two feet. Check this like a possible cause:
- 1-2 shift solenoid control circuit is open or shorted to ground
- 1-2 shift solenoid control circuit is shorted to voltage
- 1-2 shift solenoid has failed
- PCM has failed

You will need to remove the transmission pan and its the solenoid with the red and light green wires going to it. Let us know if you have questions contact us here.

Hope this helps and just keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment about this answer. Thank you for using FixYa.


Oct 20, 2011 | 1997 Dodge Ram 2500 Club Cab

1 Answer

My 2003 Lincnoln Ls has tranny problems! It's

No reason to replace a PCM behind the glove box

I have the same car, a 2004 V8

I replaced the One & only solenoid pressure control pack on mine

Having owned a trans shop in New Jersey years ago, I find your remarks
rather harsh

If they rebuilt the unit correctly , it should be fine & it should not have failed in 8 years,
if you changed the fluid every 30,000 miles, then what happened & why?

What were you told & why are you not back there?

Were updates done on the trans to correct the original problem
or any mention of a dealer flashing updates into the pcm?

Sep 24, 2011 | 2003 Lincoln LS

2 Answers

What would it cost to fix a torque converter stuck in the ON position. That is what the code reader told us it was. Chevrolet Lumina 2001. Thank you.

It may be as simple as a short in the wire or a bad TCC solenoid that needs to be replaced. The most would be just under $200.00 with parts and labor with transmission fluid and filter replaced.
If your lucky, you may find where the issue is if it's a wire that is shorting out. Inspect your TCC switch on your brake peddle and it may just need to be readjusted. The other place would be a short to the transmission harness where is connects to the transmission. Once all electrical connections have been inspected, then your going to have to move on to having a transmission shop replace the TCC solenoid replaced.
TCC always locked: TCC apply solenoid circuit shorted to ground, TCC solenoid blockage (easy fix in pan), or TC broken (must remove trans and replace TC).
Thank you for using fixya and most common would be a ground problem, good luck and hope it's will cost you nothing if you find it.

Jun 20, 2010 | 2001 Chevrolet Lumina

1 Answer

Po730 gear ratio incorrect po740 tcc circuit whats wrong ??? can it be fix

lock up control solenoid A B C is in fault causing your code that is inside the transmission most likely possible need rebuilt or used trans in if solenoid will not cure the problem

Jan 19, 2010 | 2000 Honda Accord

2 Answers

Repair info on OSD Fault Code: PO743

The code is for a TCC (Torque Convertor Clutch) solenoid problem.

Chances are pretty good the problem is the wiring where it goes into the transmission or the TCC solenoid itself which is in the valve body

There was a bulliten released from Ford about three years ago about this code being set after trans overhauls. In Ford's program stratagies, the P07xx codes are for computer detected failures due to mechanical responses. The P17xx code series are computer identified electrical failures. This code you are getting gets set when the computer does not see the what it would expect from Torque Converter lock-up. The most common problem for this (and is even stated in the bulliten I mentioned) has to do with a seal on the input shaft of the trans. The seal either gets damaged when the torque converter is installed or it is accidentally left out during the rebuild. There is not much that you personally can do, but at least you can understand how to best procede.

you will most likely end up removing that cover to inspect the harness that goes to all the solenoids and then to inspect the valve body and the TCC solenoid itself. If you have a multimeter then you could ohm through the harness and even the solenoid. I have found that most of the time this code was produced because of the solenoid itself. But it could be the circuits to it also. There is a big connector an top of the trans that goes into the trans and the internal harness inspect that connector for any corrosion or damaged pins or wires.

TCC solenoid circuit failure during on-board diagnostic.

TCC solenoid circuit fails to provide voltage drop across solenoid. Circuit open or shorted or PCM drive failure during on-board diagnostic.

Failed ON - engine runs rough/vehicle shudder, engine stalls in DRIVE (2nd, 3rd or 4th) at low idle speeds. (Short circuit).
Failed OFF - torque converter clutch never engages (Open circuit) (MIL on).

Thanks for using FixYa - a 4 THUMBS rating is appreciated for answering your FREE question.

Jan 03, 2010 | 1999 Ford Windstar

2 Answers

Where is tcc soloniod located . is it easy 2 access can i replace it by myself or 2 hard 2 do

The TCC solenoid is locared in the transmission, and although servicable it is unlikely the problem your want to fix, you are probably getting a trouble code that sent you looking, the problem is most likely that the trans. needs to be rebuilt. The sensor is sensing a shutter, which is most commonly the trans. slippping.

Sep 17, 2009 | 1995 Chevrolet Beretta

1 Answer


Po1860 will cause a false p0741. The diagnostics for p0741 requires that
po1860 is not a current code.

Po1860 is the Torque Converter Clutch circuit.
It means that the converter isn't locking up. Your mileage will suffer, but running without the converter locked will cause excessive heat and eventually will kill the transmission...that would be what i'd be most worried about...
there could be a number of reasons for this...could be as simple as the tcc solenoid, or as complex as the converter itself failing...which would mean you'd have to drop the cradle and seperate motor and trans to replace the converter...

Sep 05, 2009 | 2000 Cadillac DeVille

1 Answer


Replace the solenoid pack, or the wiring to the trans has problems. Usaully the solenoid pack in our Chrysler trans, but every once in a while, it is bad wiring.

Jun 02, 2009 | 2000 GMC Sierra

3 Answers

Tcc solenoid code

I don,t reccommend doing this your self as the k-frame will need dropped and the trans case will need split to access the solenoid also when I have to do this I will not do it on the ground I use a lift or I dont do it.

Oct 06, 2008 | 2000 Buick LeSabre

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