Skip the auto shop - Our mechanics make house calls

Q: Speed sensor passive

asked by on

Doesn't change on automatic
My car has an automatic transmission.

Hello. If the speed sensor is passive, as in it is not responding then there is likely some sort of issue with the speed sensor or circuit. Common causes are issues with the speed sensor, circuit, or even the computer. It may be possible that the sensor has simply failed and needs to be replaced. Another possibility is an issue with the sensor’s electrical circuit. An issue with the wiring that goes to the sensor, or at the connector itself may be throwing, or cutting off the signal. If the sensor and circuit appear to be okay then it may be possible that the issue is with the computer, perhaps an internal fault. I would recommend testing the speed sensor and circuit to see if it is functioning correctly and going from there. If you need help getting this tested, a certified pro from YourMechanic can inspect the sensor and guide you through this repair.

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!
  1. Home
  2. Questions
  3. Speed sensor passive

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: Car won't start, can hear fuel pump humming so I tried starting fluid in air intake and it ran for few seconds..this is second tim

You should have the computer tested to see if you have cam or crank sensor codes. You may not be getting the injectors turning on due to the camshaft sensor or a weak spark from coils. After computer test then...

Q: Temperature gauge isn't working properly

This may suggest a faulty cooling fan relay. As you may know the helps to maintain the proper coolant temperature by turning the fans on and off at specific temperature thresholds. When this switch is not working properly, this can...

Q: Car will start fine but will rarely shift into gear.

Hi there. Sounds like the transmission is having an internal issue. When your vehicle hit a curb at 65 MPH and buckled the control arm and bend the frame, the CV axle was pushed into the transmission causing a harsh...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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.