The first step is to check your owner's manual to see what the engine light means. The manual will usually have a list of possible causes for the engine light, as well as instructions on how to fix the problem.
Step 2: Check the gas cap
A loose or missing gas cap is a common cause of the engine light coming on. Make sure the gas cap is tight and secure.
Step 3: Check the oil level
A low oil level can also cause the engine light to come on. Check the oil level and add oil if necessary.
Step 4: Check the air filter
A dirty air filter can also cause the engine light to come on. Remove the air filter and inspect it for dirt and debris. Clean the air filter if necessary.
Step 5: Check the spark plugs
Worn-out spark plugs can also cause the engine light to come on. Remove the spark plugs and inspect them for wear. Replace the spark plugs if necessary.
Step 6: Check the oxygen sensor
A faulty oxygen sensor can also cause the engine light to come on. The oxygen sensor is located in the exhaust system. Remove the oxygen sensor and inspect it for damage. Replace the oxygen sensor if necessary.
Step 7: Check the catalytic converter
A clogged catalytic converter can also cause the engine light to come on. The catalytic converter is located in the exhaust system. Remove the catalytic converter and inspect it for damage. Replace the catalytic converter if necessary.
Step 8: Take your car to a mechanic
If you are unable to fix the problem yourself, you will need to take your car to a mechanic. The mechanic will be able to diagnose the problem and fix it.
