Skip the auto shop - Our mechanics make house calls

Q: How to fix my torque converter clutch when it's

asked by on

Bad torque converter clutch control sensor is stuck how can I fix it

My car has 208021 miles.
My car has an automatic transmission.

A: Hey there. If you are getting Diagnostic Tr...

Hey there. If you are getting Diagnostic Trouble Code P0740, that means there is a fault in the torque converter clutch circuit, which includes the solenoid malfunction.

The solenoid itself (it’s a solenoid, not a sensor) has to be tested to be sure it has really failed because there are several other possibilities for what might appear to be a stuck solenoid including things as mundane (and easily resolved) as low or dirty transmission fluid and/or a plugged transmission filter. Wiring faults can even account for the code setting. If the solenoid is indeed bad, this is a standard on the vehicle repair that can be performed in the field by YourMechanic, but it is recommended that you have an expert diagnose the code so that this can be corrected properly.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Fuel System?

A whirring noise is actually a common symptom of a failing fuel pump. You can rule the power steering pump in or out just by disconnecting power steering belt. Obviously, if the noise remains the same with pump disconnected, then...

Q: clutch or gearbox ?????

Without more information, such as the symptoms you experienced, it is nearly impossible to determine the cause of your concern. Usually a clutch will wear out before the gearbox.

Q: Engine not running correctly after rebuild

I'd need to know the symptoms you are having but I'm assuming the engine is burning oil. Valve seals control the oil that lubricates the valve stems and prevents it from seeping into the guides in excessive amounts. The piston...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.