Incredible What Causes Check Engine Light To Stay On References. The gas cap is designed to keep contaminants from getting into the fuel system. A blinking or flashing check engine light indicates an issue severe enough to cause damage to critical systems like the catalytic converter or internal.
Web 6 reasons why your check engine light might be on your engine light comes on for several reasons, from bad spark plug wires and a broken gas cap to a faulty oxygen sensor. The most common cause is a problem with the oxygen sensor. 4 may 2023 • 8 min read.
