Skip the auto shop - Our mechanics make house calls

Q: On my car, the transmission output speed sensor isn't responding at all. What do I need to do? I've scanned it with OBD scanner 2006 Hyundai Sonata

asked by on

Rough shifting not want to shift to higher gear
My car has an automatic transmission.

Hi there - excellent diagnostic work thus far! The next step is to determine if the output speed sensor is producing a signal at all, and if so, is it a valid signal, or is the wiring to the sensor the problem? This will require an oscilloscope (or possibly an AC voltmeter will work) and a factory service manual which tells you what the electrical output of this sensor should look like. Examining the wiring first is an essential check as well. For assistance, I recommend a transmission inspection performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, and give you an accurate assessment of damage and cost estimate for repairs.

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
  1. Home
  2. Questions
  3. On my car, the transmission output speed sensor isn't responding at all. What do I need to do? I've scanned it with OBD scanner 2006 Hyundai Sonata

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: My engine idles heavy 1/3 of the time

If the throttle is sticking open or the idle air control valve is sticking open, would account for the check engine light not coming on. The vehicle would have to be checked to make sure the throttle is not being...

Q: My TCS light comes on frequently and then it will display TCS off and slipped. Sometimes it will cut off and then restart later.

Hi there. Most often, this problem is due to a dirty or failed wheel speed sensor. The ABS and TCS systems depend on wheel speed readings from these sensors. Cleaning the sensor heads, and the inductance rings on the wheel...

Q: Car sputtering and vibrating when idling.

Hello, if a car is vibrating at idle only, but has normal power with no driveability issues or check engine light on, the most likely failure is collapsed motor mounts. Motor mounts are rubber insulators that are attached between the...

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 Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...