The check engine light on your ML 320 is an indicator that there is a problem with your vehicle's emissions system. This could be due to a variety of reasons, such as a faulty oxygen sensor, a problem with the catalytic converter, or a leak in the exhaust system. When the check engine light is on, it is important to have your vehicle inspected by a qualified mechanic as soon as possible. Driving with the check engine light on for too long can cause further damage to your vehicle and can also lead to emissions violations.
Here are some of the most common causes of the check engine light coming on in an ML 320:
- Faulty oxygen sensor
- Problem with catalytic converter
- Leak in exhaust system
- Faulty fuel injector
- Bad spark plug
- Vacuum leak
- Faulty mass air flow sensor
- Coolant temperature sensor
