I mentioned earlier this light coming on occasionally. I have a 1995 Ford Escort LX. My dad thought that it might be bad gas. The light came on his truck recently. We recently switched stations. The light didn't come for a few days. It started coming on again. Such periods are usually brief. My uncle said that the light has come on with his new car. I can understand why this light is so confusing. One article suggested the oxygen sensor.
Sincerely, Darren Thornton