Skip the auto shop - Our mechanics make house calls

Q: Check Engine light still on after speedometer fix.

asked by on

My Check Engine light came on after the speedometer went out. I replaced the speedometer and the Check Engine light is still on.

Hi there. The most common cause of the speedometer quitting and the Check Engine Light coming on is the vehicle speed sensor. This sensor is located on the transmission and sends a speed signal to the computer to allow the computer to know engine speed and for it to show on the dash. Once the sensor is replaced the codes reset it should be fine. A mechanic would typically install a scan tool to see if they get a speed signal from the sensor. If not then it is replaced. If you are not comfortable with this then you should enlist the help of a certified mechanic, like one from YourMechanic.

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

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 car started overheating and I believe it was because of the coolant because I put some more and stopped

Hi...If there is an obvious leak, the fastest way to resolve this is to request a leak diagnostic. If simply "one" leak point is found on inspection, the responding certified mechanic will simply identify the parts required to fix it...

Q: Cad wont go faster than 35mph

Hello. From what you describe it would appear that some sort of serious issue may have occurred. If you've found oil all over the engine I would try to figure out where it came from. It is likely that an...

Q: Idling while driving

The main issue you have here is the number of miles on your car. With this many miles, most cars would have been completely worn out. Unless you have taken meticulous car of your car, it is often necessary to...

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...
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...
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...