When the P0742 code appears, it means that the amount of torque converter lock up required is not in line with the amount that is actually detected. The transmission control module will detect the slippage on the torque converter clutch when the converter is commanded off.
Where is the torque converter clutch solenoid located?
► What Does a Torque Converter Clutch Solenoid do? Positioned between the rear of the engine and the front of the transmission is the torque converter. The torque converter is responsible for transmitting the engine’s torque and power to the transmission.
How do you fix a torque converter clutch circuit intermittent?
What repairs can fix the P0744 code?
- Checking and replacing transmission fluid; if the fluid is found to be very dirty, flushing the system and replacing the torque converter may be required.
- Checking and replacing any shorted or faulty wiring, connectors, and circuitry.
- Replacing the internal transmission harness.
How do I fix code P0742?
What Repairs Will Fix P0742?
- Replace the torque converter clutch solenoid.
- Replace the torque converter or clutch.
- Change transmission fluid and filter.
- Repair/replace damaged wiring and connectors.
- Repair/replace TCM or ECU.
- Install a rebuilt or remanufactured transmission.
What is a torque converter clutch solenoid circuit stuck on?
OBD II fault code P0742 is a generic code that is defined as “Torque Converter Clutch Circuit Stuck On”, and is set when the PCM (Powertrain Control Module) or TCM (Transmission Control Module) detects a defect, failure, or malfunction that causes the torque converter lock up clutch to remain engaged.
How much does it cost to replace a torque converter clutch solenoid?
On average individual solenoids cost between $15-$30, with prices reaching as high as $100, according to Autoservicecosts. Depending on the number of solenoids you need to replace and service time, labor costs will range from $70–$150.
What happens when a torque converter solenoid goes bad?
When the torque converter starts malfunctioning, you may feel shuddering and even slipping in overdrive. You usually notice your car shuddering because it feels like it’s vibrating. Your car will vibrate even when you’re not going very fast. The shuddering makes the car lag and is very noticeable.
What does torque converter clutch circuit intermittent mean?
When the ECU stores a P0744 diagnostic trouble code, it means the ECU isn’t able to be in full control of the torque convertor clutch.
What is torque converter clutch circuit?
The (TCC) torque converter clutch creates a one-to-one connection between the engine and the transmission that increases fuel mileage and reduces transmission fluid temperatures. Slippage consumes power during the coupling phase. Locking the converter shell to the turbine shaft prevents this slippage from occurring.
What is a torque converter clutch?
The Torque Converter Clutch (TCC) mechanically locks the engine to the transmission by connecting the impeller with the turbine through a wet clutch. This way the torque converter slip is eliminated and the efficiency increased.
What can cause a P0742 code?
What causes the P0742 code?
- Dirty transmission fluid.
- Low transmission fluid.
- Faulty torque converter clutch solenoid valve.
- Internal mechanical problem with the transmission.
- Torque converter clutch solenoid valve harness or connectors could be bad.
- Torque converter clutch solenoid valve circuit could be shorted or open.
What is the GM code P0894 transmission component slipping mean?
Diagnostic trouble code (DTC) P0894 stands for “Transmission Component Slipping.” This code is logged when the powertrain control module (PCM) has received information from the input and output speed sensors that an internal transmission component is slipping.