Skip the auto shop - Our mechanics make house calls

Q: A Sensor is Faulty

asked by on

I’m getting “A Sensor is Faulty” code up on my dashboard. It's a transmission speed sensor that the code is referring to. I changed all 4 ABS sensors, but now the speedometer isn’t working. I checked all of my sensors 3 times and they are all good and connected. Do you have any idea what’s going on? Thanks.

Hello. If the speedometer is not working and you are getting this code, then the vehicle speed sensor needs to be replaced. This will cause all of this to occur. This sensor is located on the transmission. In some cases, it can be the wiring to the sensor, but that is not as common. If you want to have this done, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose the speedometer problem and perform correct 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

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: The codes p0012 and p0015 was shown on the scanner when I had my car checked.

Hi there. The codes P0012 and P0015 are related to the camshaft position sensor. Check the sensor out and make sure that its plugged in. Also, check for power to the sensor. The camshaft sensor keeps the ignition correct at...

Q: Car will not shift, speedomete is erratic..

Hey there: It's possible that the speedometer sensor is the source of your shifting and speedometer issues. The speedometer sensor is designed to register the driveshaft’s rotational speed and relay this information through the speedometer cable and to the vehicle’s...

Q: Car not going into reverse

Hello. If the transmission will go into every gear except for reverse then you may have a serious internal transmission failure. Reverse is the first gear to fail when the transmission fails. I typically drain the fluid out of the...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...