Question about 1998 Saturn SW

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I have a 1998 Saturn sw making a sounds.Check eng. light is always on. I was told it was the transmission with code 741-tcc performance are off. But no one will give be an estimate, can you help and what dose this code mean.

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YOU HAVE A BAD TORQUE CONVERTER CLUTCH SOLIENOID. AND THE NOISE YOU ARE HEARING IS TRANS FLUID UNDER PRESSURE TRYING TO PASS THRU THE SOLINOID BECAUSE IT IS STUCK CLOSED HOPE THIS HELPS

Posted on Sep 12, 2010

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How to fix


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
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May 16, 2015 | Cars & Trucks

1 Answer

Why is my 1998 Ford Windstar 98 reading DTC P0743?


#1) Low or dirty transmission fluid #2) Wire/circuit issue shorted to power or ground #3) Failed torque converter clutch (TCC) solenoid #4) Failed TCC assembly in the torque converter.....

Since Transmission has been rebuilt I would strongly suspect the TCC solenoid and/or its wiring...When transmission was rebuilt did the TCC get replaced? If so, due to being intermittent, Check the TCC plug (both female and male) for bent or dirty contacts...also insure you have close to zero ohms of resistance from negative battery post to transmission case...A poor ground will cause a problem and be at times...saailer

Apr 25, 2015 | 1998 Ford Windstar

1 Answer

2002 ford escape v6 with trans code p1744 and 741


Unfortunately, the possible issues are numerous. The problem is most likely either your torque converter, or electrical issues with your transmission. Without knowing how the vehicle is acting, if it's drivable, when it trips the codes, etc, it makes it more difficult to accurately diagnose.

Here is what ford says about those codes...

SERVICE PROCEDURE
The torque converter clutch may not engage if one or more of the following conditions exist:
- Stuck converter regulator valve
- Stuck solenoid regulator valve
- Stuck bypass clutch control valve
- Stuck pressure failsafe valve
- Pump bore ring groove depth incorrect
- Worn pump shaft or damaged pump shaft seals
- Pump shaft internal sleeve loose (rattles)
- Turbine shaft seals damaged or missing
- Incorrect Torque Converter Clutch (TCC) solenoid
- TCC solenoid mechanically stuck or electrically inoperable
- Damaged internal wiring harness
- Incorrect gear ratio (wrong sprockets)
- Damaged or worn stator support
- Worn torque converter hub bushing
- Torque converter clutch worn or damaged
Use a scan tool to monitor the following PID's:
- TCC = Commanded duty cycle for TCC solenoid
- TCCMACT = Actual slip across the TCC, measured in RPM
- RPM = Actual engine speed
- TSS_SRC = Actual turbine shaft speed
- TCCRAT = Speed/Gear ratio of torque converter/transaxle

Hope this helps.

Feb 16, 2014 | 2002 Ford Escape

1 Answer

Po741 on 1998 olds auroa


Code 741 is for a problem with the torque converter solenoid circuit.
The solenoid could be faulty, or it could be something else in the wiring or the transmission.
You have to drop the sub-frame and suspension to access the side pan on the transmission. The solenoid is in the side pan.
Not for the amateur mechanic.

Mar 04, 2013 | Cars & Trucks

1 Answer

TCC SYSTEM STUCK OFF AND TRANSMISSION CONTROL SYSTEM MALFUNCTION (CODES 741 AND 700) WHEN TESTED. TRANSMISSION FEELS LIKE IT IS SLIPPING, ESPECIALLY WHEN I TURN, I HAVE TO REV THE MOTOR A FEW TIMES...


the tourqe converter solinoid when bad..it wasnt allowing the transmission to go into lock-up mode...the slipping u felt caused the tranmission clutches to wear prematurely....

Jul 16, 2011 | 2005 Kia Rio

1 Answer

Check engine light is on the computer is saying code 741 & 1860 what is this telling me. I had justy replaced the pan gasket and the filter and oil.


P0741 , P01860 are both transmission codes..TCC solenoid (torque converter clutch ) shorted., this is common and is an extensive job to repair. Was the gasket and pan replaced on the motor or transmission ?

Jul 29, 2010 | 2006 Cadillac DeVille

1 Answer

I have a code 741 on my 01 saturn S- series any suggestion on how to fix.


check the tcc fuse under the hood mfuse block if thats good,,,its most likely the tcc solenoid inside the ntop of the trans,the dealer has a test they can do to see ifits working,if its not the tcc solenoid which im sure it is,its either a wire issue or a pcm,i would go for the tcc solenoid

Oct 12, 2009 | 2002 Saturn Sl

1 Answer

Flashing O/D Off Has codes 733 & 741


P0733 Gear 3 Incorrect ratio
P0741 Torque Converter Clutch Circuit Performance or Stuck Off
Based on the experience i have with these codes at the Ford dealer I work at u are going to most likely need a transmission overhaul, it is slipping and the torque converter clutch is defective.

Apr 22, 2009 | 1999 Ford Explorer

1 Answer

1998 saturn sl2 1.9 dohc


TRS LP
TRS 3/4
TRS 2/TCC
These are the fuses for the solenoids in the valve body Inside the Transmission, they turn on & off as needed to shift.
Check all of those fuses, making sure they are not corroded or tarnished.
Make sure that your charging system is functioning properly.

Please Rate My Response! Thanks!

Feb 02, 2009 | 1998 Saturn SL

1 Answer

Eng light comes on and code 1887


The code P1887 is an indication of a malfunction with the TCC release switch.
The Torque Converter Clutch (TCC) release switch is part of the Automatic Transmission Fluid Pressure Manual Valve Position Switch (TFP Val. Position Sw.). The TFP Val. Position Sw. is mounted to the transmission valve body. The switch is normally-closed. The switch signals the Powertrain Control Module (PCM) that the TCC is released. This is accomplished by Torque Converter release fluid pressure acting on the switch contact, thus opening the switch. When the voltage is high on the circuit, the Powertrain Control Module recognizes that the TCC is no longer engaged.
When the PCM determines that the TCC release switch is open (indicating that the TCC is not applied) and the TCC slip speed indicates that the TCC is applied, then DTC P1887 sets.

Oct 04, 2008 | 1996 Chevrolet Cavalier

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