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Check engine lite comes on and ob2 scanner gives trouble shooting code p0741 torque converter clutch solenoid performance or switch stuck off.how can i fix

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Replace the solenoid group on the transmission

Posted on Jul 03, 2010

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P0741 Torque Converter Clutch Circuit Performance or Stuck Off OBD-II Trouble Code Technical Description Article by Dan Weller ASE Certified Master Technician Torque Converter Clutch Circuit Performance or Stuck Off This diagnostic trouble code (DTC) is a generic OBD-II powertrain code. It is considered generic because it applies to all makes and models of vehicles (1996-newer), although specific repair steps may vary depending on the model. What does that mean? Modern vehicles equipped with automatic transmissions / transaxles use a torque converter between the engine and transmission to increase the engine torque output and drive the rear wheels. The engine and transmission are actually connected by a fluid coupling mechanism inside of the torque converter which is what multiplies the torque until the speeds equalize and create a "stall" speed where the difference in actual engine RPM and transmission input RPM is around 90% efficient. Torque converter clutch (TCC) solenoids commanded by the Powertrain control module/Engine control module (PCM/ECM) or the Transmission control module (TCM) to direct hydraulic fluid and engage the torque converter clutch to create a solid coupling and increase efficiency. The transmission control module has detected a fault with the circuit that operates the torque converter clutch solenoid. Note: This code is similar to codes P0740, P0742, P0743 and P0744. There may be other diagnostic trouble codes associated with the transmission control module that can only be accessed by using an advanced scan tool. If any additional transmission related DTC's appear in addition to the P0741, an electrical failure is likely. Symptoms Symptoms of a P0741 trouble code may include: Performance or Stuck Off Indicator Lamp (MIL) illuminated (a.k.a. Check Engine Light) Minimal decrease in fuel economy, this will not affect engine performance Potential Causes Causes of this DTC may include: Wiring harness to transmission shorted to ground Torque converter clutch (TCC) solenoid internal short Transmission control module (TCM) Diagnostic Steps for P0741 DTC Wiring harness - Check transmission wiring harness for damage or loose connections. Use a factory wiring diagram to locate the appropriate power source and all connection points between circuits. The transmission may be powered by a fuse or relay, and triggered by the TCM. Disconnect the transmission harness at the transmission connector, power source and TCM. Check for a short to ground inside the transmission internal wiring harness by locating the appropriate + and - pins for the torque converter clutch solenoid. Using a digital volt ohm meter (DVOM) set to ohms scale, check for a short to ground in the circuit with the positive lead on either pin and the negative lead to a known good ground. If resistance is low, suspect a short to ground the internal harness or the TCC solenoid - removing the transmission oil pan may be necessary to further diagnose the TCC solenoid. Test the wiring between the TCM and the wiring harness connector at the transmission case using the DVOM set to ohms. Check for a possible short to ground by moving the negative lead on the DVOM to a known good ground, resistance should be very high or over limit (OL). Torque converter clutch (TCC) solenoid - Check the resistance in the TCC solenoid and internal transmission wiring at the transmission case after removing the transmission harness plug (if applicable, some makes/models use a TCM bolted directly to the transmission case). Some makes/models use a transmission wire harness with the TCC solenoid and internal harness as a single unit. Using the DVOM set to ohms, check for a short to ground with the positive lead on either circit to the TCC and the negative lead on a known good ground. Resistance should be very high or over limit (OL), if it is low, suspect a short to ground. Check for voltage on the power side circuit of the TCC solenoid or at the wire harness connector at the TCM with the DVOM set to volts scale, positive lead at the wire being tested and the negative to a known good ground with the vehicles key on/engine off, battery voltage should be present. If no voltage is present, determine the loss of power back through the circuit using the manufacturers wiring diagrams for reference. Transmission control module (TCM) - Since the torque converter clutch is only activated during certain driving conditions, it will be necessary to monitor the TCM with an advanced scan tool to determine if the TCM is commanding the TCC solenoid and what the actual feedback reading is at the TCM. The TCC solenoid is normally controlled by a duty cycle to engage a more comfortable torque converter cluch engagement. To test if the TCM is actually sending the signal, a graphing multimeter set to duty cycle or a digital storage oscilloscope will be required as well. The positive lead is probed into the wiring harness plugged into the TCM and the negative lead to a known good ground. The duty cycle shold be the same as being commanded by the TCM in the advanced scan tool reading. If the cycle stays at 0% or 100% or is intermittent, re-check connections and if all wiring / solenoid is OK, the TCM may be at fault.

Read more at: http://www.obd-codes.com/p0741
Copyright © OBD-Codes.com

May 16, 2015 | Cars & Trucks

1 Answer

Torque converter p0741 performance


code p0741 refers to torque converter clutch (TCC) solenoid--performance or stuck off===causes-- Wiring---TCC solenoid. I would consider replacing the TCC solenoid

Sep 25, 2013 | 2003 Hummer H2

1 Answer

Hi there. My check engine light just started coming on (of course the week I decide to sell my car) and the code that came up in the diagnostic was P0741 torque converter clutch solenoid performance. I...


code p0741 refers to the torque converter clutch(TCC) solenoid--performance or stuck off===causes --Wiring-- TCC solenoid. The engine light is telling you that the cpu has found sensors that are out side of set parameters logged in the cpu program. The problem will be in the TCC solenoid either failed or the wiring connectors are dirty or have water in the connection. The fault refers to the unit and not the internals of the gear box which would have showed up with other fault codes.

Aug 16, 2013 | 2005 Toyota Corolla CE

3 Answers

Showing p0741 and the service engine soon light is on


P0741 Torque Converter Clutch Circuit Performance or Stuck Off, take a cheap OBD2 code scanner to erase the code, if the light come again, you need to take it to repair.

Mar 07, 2013 | Cars & Trucks

1 Answer

Kia sportage 2008 4x4 is always on / always engaged


is a faulty transmission solenoid
pan off to replace it
Torque Converter Clutch Circuit Performance or Stuck Off

The Powertrain Control Module (PCM) will set the P0741 diagnostic trouble code when it notices a difference between the rotational speed of the torque converter and the transmission input shaft that is greater than 200 revolutions per minute (RPM).


P0741 OBD II Trouble Code Torque Converter Clutch Circuit Performance or...

Jul 31, 2012 | 2008 Kia Sportage 2.0

1 Answer

Gmc p0741 torque converter clutch circuit performance or stuck off


The transmission oil pan must be removed and the TC solenoid tested, if it works you will need to remove the transmission replace the Torque Converter.

Jun 07, 2012 | GMC Yukon Denali Cars & Trucks

3 Answers

My Ford Focus 2006 4 cyc has an engine code PO741 on my OB2. What does that mean?


P0741 Torque convertor clutch circuit failure,it is located in the transmission valvle body, it is attatch to the valve body you can remove it seperately as long as your going to own the Ford focus you might as well get use to replacing these all the time,very common transmission issue with todays car. By the way it is sensitive to worn transmission fluid,when you dont service often these are suspectable to failure.

Apr 22, 2011 | Ford Focus Cars & Trucks

2 Answers

Honda Civic 2005 Check Engine Code P0741 Torque Converter or Stuck Off


Possible causes - Low transmission fluid level
- Dirty transmission fluid
- Faulty torque converter clutch solenoid valve
- Torque converter clutch solenoid valve harness or connectors
- Torque converter clutch solenoid valve circuit is open or shorted
- Transmission internal mechanical problem

Mar 01, 2011 | 1999 Honda Civic

1 Answer

About every 200 miles, check engine lite comes on with code P0741, tourqe converter clutch circute per. or stuck off. Also, min oil indicater comes on, we check the oil and it is at proper level


Hi!

The torque converter Clutch solenoid is responsible to hold the pressure when you put your foot on the brakes and that's why automatic transmission don't let the car stall at a stop sign. So you might check the transmission oil for the proper level and hopefully you wont need to change the torque converter clutch Solenoid. Good luck

Jan 29, 2011 | 2003 Audi A6

1 Answer

Code po741 on a cadillac deville dhs 2001


P0741 Torque Converter Clutch Circuit Performance or Stuck Off

Your car actually has a viscous converter clutch inside the torque converter instead of a (mechanical) torque converter clutch to lock up the torque converter for fuel economy improvement. You will see it referred to as the VCC and/or TCC.....

The TCC/VCC has a variety of components in the system including an electrical circuit supplying the transmission, the apply solenoid inside the trans, the torque converter itself, the PCM that controls the apply, etc. It is impossible to diagnose from afar. Unlikely that it is a "sensor" inside the trans as the PCM controls the VCC apply and uses engine and trans data that it receives from a variety of sources. If a "sensor" had failed the trouble code for that sensor would be setting......

Something as simple as the brake switch can cause the VCC to not apply correctly. There is a safety switch on the brake pedal that activates the brake lights and disconnects the VCC circuit. If it is misadjusted then the trans cannot apply the VCC. Lots of other trouble shooting items on the VCC system. If you don't have a service manual and cannot trouble shoot the system, I would recommend a Cadillac dealer as they have the trouble shooting information for the specific VCC that the Cadillac 4T80E trans has that a trans shop is simply not familiar with. No sense working on the trans until you actually know what is wrong.

Jan 13, 2010 | 2001 Cadillac DeVille

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