Q: Input turbine speed sensor B has stopped working

asked by on

The car goes into limp mode

My car has 12500 miles.
My car has an automatic transmission.

Hello and thank you for your question. It sounds like the input turbine speed sensor B has failed or lost connection to the engine control module (ECM). You will first need to check the wiring to the sensor and see if there is any debris or corrosion at the circuit causing a blockage of power. If the circuit has power and the engine is working well but the transmission is still in limp mode, then the sensor has failed. I recommend replacing the sensor if this is the case. If the sensor has been replaced and the wiring is in good shape, then the ECM has lost its programming or the ECM has failed, in which case the ECM should be flashed or replaced. If you need assistance troubleshooting the input speed to the transmission, then you can always seek out a professional technician, such as one from YourMechanic, to help you with your vehicle.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Input turbine speed sensor B has stopped working

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: Q: Car going into Limp Mode

Your problem may be something simple or more complex. The first thing that needs to happen is for the Diagnostic Trouble Codes or DTC's to be read and addressed. There are only a few things that can put your car...

Q: Hesitation backing up

Hello. The symptoms you describe can commonly be caused by transmission issues as well as a variety of other issues. If the issue only appears to occur with reverse gear then it may be possible that there is an issue...

Q: What is the cost of a cylinder head replacement and is this reasonable?

Before having the cylinder head replaced, check the compression on all cylinders. What you are looking for is that the compression is 120 psi or more and the first puff of compression is half of the max puff of compression....

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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.