Table of Contents
What can cause a check engine light to come on?
What causes the check engine light to come on?
- Oxygen sensor (or O2 sensor)
- Catalytic converter failure.
- Spark plug or ignition coil failure.
- Airflow sensor failure.
- Replace the thermostat.
- Replace exhaust gas recirculation (EGR) valve and clean all EGR ports.
How serious is check engine light?
The check engine light — more formally known as the malfunction indicator lamp — is a signal from the car’s engine computer that something is wrong. If the light begins flashing, however, it indicates a more serious problem, such as a misfire that can quickly overheat the catalytic converter.
What does this check engine light mean on my dash?
When your car’s check engine light illuminates your dashboard, it’s usually accompanied by a sinking feeling in the pit of your stomach . The light could be a minor issue, such as a faulty gas cap, or it could mean something more serious, such as a misfiring engine.
Does the Check Engine light mean low oil?
Low oil pressure is a common cause of a check engine light turning on, and it can seriously interfere with your car’s performance. Usually, if this is the case, your oil light will also appear. Low oil pressure is often the result of wear and tear in your car’s oil pump, or improper oil change procedures resulting in overfilling or getting air in the pump.
Why does the service engine light come on?
The service engine light comes on in your vehicle because the computer has diagnosed that something isn’t quite right. When the light comes on, a code is stored as the reason for triggering the light.
How to ckeck engine light codes?
Chevy Check Engine Light Codes Connect scan tool to the 16-pin data link connector (DLC) located underneath the steering column. The connector may have a removable cover. Turn the ignition on. Follow scan tool manufacturer’s operating instructions to access the Diagnostic Trouble Codes (DTC’s).