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?
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: The code p0977 is appearing when scanned the cars computer.

Hi there. Look at the transmission pins where the harness connects. You will see 4 pins in a line. The second pin from the left on the 4 pin line up is for the shift circuit 'B'. I recommend dropping...

Q: Radio/Speedometer not working?

Hi, thanks for writing in. I'd be happy to provide my insight. This can be caused by a few things. There is a speed sensor at the transaxle that emits a signal to the computer, however if the car is...

Q: drone sound only when turning the wheel to change lane or exit ramp (on any/all road surfaces)

Hi there. It sounds like there could be a rear wheel bearing causing the drone. Has anyone checked the rear wheel bearings? They may have gone overlooked due to the front wheel bearings; it does happen. I suggest having a...

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 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...
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.