Cause Of Engine Light On

Todayâ s modern cars trucks and suvâ s are very carefully monitored for fuel economy.

Cause of engine light on.

3 faulty catalytic converter. Top 7 reasons your check engine light is on 1. 2 loose gas cap. A loose fuel cap is one of the most common reasons why the check engine light turns on.

5 bad spark plug. Your gas cap seals the fuel system and helps maintain pressure within the fuel. It notably prevents gasoline fumes from leaving. A steady light means there s no immediate cause for alarm but you should still get it checked out.

4 faulty ignition coil. 6 bad mass air flow sensor. Head to an auto parts store and have them run a diagnostic to find the cause of the check engine light. One sensor has a loose electrical connection or is damaged.

Occasionally the check engine light comes on when nothing is wrong with the car said steve mazor chief automotive engineer for the auto club of southern california. Call ahead and make sure they can handle your make and model since some cars have special computers. The cap is a crucial part of a car s fuel delivery system. Your oxygen sensor measures the amount of unburned oxygen in your.

Oxygen sensor needs to be. You have a bad. Loose or damaged fuel cap. It could be a temporary.

Chevrolet check engine light. 1 faulty oxygen sensor. Gas cap is loose damaged or missing. 5 reasons your check engine light may be on your oxygen o2 sensor needs to be replaced.

Schedule auto repair email for free estimate auto repair coupons. In general five common malfunctions can cause the check engine light to come on and some of them are simple to fix yourself.