Service engine light turned on?

Unfortunately there are about 1000 reason (no exaggeration) for the light to come on. The only way we are going to know for sure what this issue could be is to check the codes.

Here is a guide that will help with this:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Once we know what codes are there we will know what action to take. This is not a thing that happens just at certain mileage. It does indicate an issue so let's get the codes and go from there. If you don't have a scan tool then you can stop by a parts store and most of them will pull the codes for free.

Let us know if you have questions. Thanks

P0420,86-1, 83-1, 61-1, 18-1, 16-1

Hello, the p0420 codes is for the catalytic converter being weak or the engine running rich. Please go over this guide to help us fix it.

https://www.2carpros.com/articles/why-an-automotive-engine-will-run-rich/

P0420: Catalytic-converter efficiency below threshold, bank 1
61-1: Low battery voltage
83-1: Engine-control system/PCM-related fault detected by the ABS/VSA system
86-1: Communication malfunction between control modules
16-1: Right-rear wheel-speed sensor signal fault
18-1: Left-rear wheel-speed sensor signal fault


What year is your car and how many miles does it have on it?