Q: Service Engine Soon and ABS light on. Won't pass smog check.

asked by on January 19, 2016

The Service Engine Soon light is on, as well as the ABS light. The speedometer does not work. My car will not pass a smog check because of these problems. The speed sensors were just replaced, but I still get Code P0500, vehicle speed sensor A.

The problem may be the reluctor wheel. This is what the sensor reads as the wheel turns. If one of the teeth on the wheel are damaged or missing, the sensor will not be able to determine speed. The problem could also be wiring. The ABS system on your vehicle is very complex and should only be serviced by qualified technicians. YourMechanic can help you find and book one to diagnose and repair the issue.

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

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

Loud roaring but turbo cannot be heard, no changes in horsepower

If you are not hearing your turbocharger while accelerating but the vehicle still accelerates as normal, I would not consider this an issue to worry about. However, if you don't hear the turbo and you feel that your vehicle is...

how much do you think my annual maintenance costs will be for a 2017 BMW 230i for the first five years?

Hello. You should have the first few years covered as far as maintenance goes. Once it is out of the free schedules maintenance it should run you about $500 per year based on the recommended schedule. If you drive more...

Daytime running lights flashing.

You need to check the charging system to make sure the voltage output is not over about 13.7 volts. If it is then have charging system checked. The fog lights and daytime running lights are on different circuits and should...

Related articles

How Long Does an Air Cleaner Temperature Sensor Last?
An An air cleaner temperature sensor is not overly common on newer vehicles. This is because in order to ensure that your car engine operates the way it should, several electronic sensors may actually be needed. However, if you drive...
How to Buy a Good Quality Crankshaft Position Sensor
Just Just like the name indicates, the crankshaft position sensor monitors the rotation speed and position of the crankshaft. The crankshaft is what turns the engine’s piston power into a force that can actually move the vehicle. Its position must...
How Air Bags Work
Designed Designed to protect the occupants of a vehicle in the case of an accident, air bags inflate when the vehicle collides with another object, or otherwise suffers a sudden deceleration. Absorbing the energy of the impact, vehicle owners need...