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 1,000 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. A Sensor is Faulty

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: Acceleration issue, RPMs increase but not speed

If your car is revving up but not moving, or is slow at gaining speed, then you have a slipping clutch. If you have a manual or automatic transmission it will still be a clutch issue. A mechanic with experience...

Q: Replaced rear seal and now I Only have first gear and my speedamater don't work.

If you replaced the tail shaft seal behind the yoke and had to remove the driveshaft, then it is possible that the transmission vehicle speed sensor VSS is not installed correctly or the harness has been damaged. This will make...

Q: No power to the fan BMW 2000 323i

A problem of this sort is diagnosed, and thence repaired, in an electrical circuit/component diagnostic. Basically, the responding certified mechanic relies on the factory wiring diagram to trace the faulty circuit to find the interruption. The fan of course is...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...