Trouble Code: P0741 (Torque Converter Clutch Circuit Performance or Stuck Off)

Most people drive vehicles with automatic transmissions in them. If you own a vehicle like this, then it has a torque converter positioned in between the transmission and the internal combustion engine. The purpose of the torque converter is to create more torque output from the engine so that the drive wheels can receive power to move. If your torque converter were to malfunction for some reason, it could cause all kinds of symptoms and issues with your vehicle’s driving performance. Some of which include engine slipping, loud noises, stalling and overheating.

Trouble Code P0741

There are all kinds of issues that can happen with a torque converter. Sometimes the converter might not be the direct cause of the problem. To understand for sure where the problem lies, you need to run a diagnostic scan on the powertrain control module. After all, this module is the central computer of the vehicle which manages the torque converter and every other major component. If the diagnostic scan reveals trouble code P0741, the problem can be identified as “torque converter clutch circuit performance or stuck off.” So, what does that mean?

In normal situations, the transmission shaft and torque converter will rotate at the same speed. But if there is a big difference between their rotation speeds, it will cause trouble code P0741 to generate. This difference in speed must be over 200 RPM (revolutions per minute).  The powertrain control module will be able to detect when this occurs.

Trouble code P0741 indicates that the torque converter clutch is not engaging. The result will be a weaker driving performance with frequent engine stalling issues. Other symptoms will include difficulty shifting, stuck gears, and the Check Engine warning light coming on. If the problem continues, there will be damage to the transmission that cannot be repaired. That is why you’ll want to take your vehicle to a mechanic as soon as you notice these symptoms.

Read also: Explained Trouble Code: P0306 (Cylinder 6 Misfire Detected)

The Underlying Issue

Now the big question is, what causes the rotational speeds of the torque converter and transmission shaft to be different? Well, this could be due to a low level of transmission fluid, blockage of the pressure, damaged wires or connectors, a glitch in the powertrain control module, or a worn valve body. Trouble code P0741 will not be able to describe the exact root cause of this problem, but it will be enough to tell the mechanic where to start investigating it.

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