Why does check engine light come on when I get gas?
There are many reasons your car’s check-engine light turns on after you fuel up. It could be a loose gas cap, a gasket gone bad on said gas cap, or a damaged vacuum hose, among others. If it detects a loss of pressure, the check-engine light will come on, indicating that there’s a problem.
Can gas make check engine light come on?
Sometimes a tank of bad gas can cause a “check engine” light to come on. If your indicator light is caused by bad gas, it will shut itself back off after you run a tank or two of good gas through the car. Many automotive parts stores and some repair places will hook your car up to a diagnostic reader free of charge.
What causes “check engine” light to come on?
Officially known as a malfunction indicator lamp, the check engine light can go on for a number of different reasons. In some cars, something as simple as a loose gas cap, which the car’s computer can read this as a leak in the emissions system, or even a change in humidity can cause the light to come on.
Will ‘bad’ gas cause check engine light to go on?
Sometimes a tank of bad gas can cause a “check engine” light to come on. If your indicator light is caused by bad gas, it will shut itself back off after you run a tank or two of good gas through the car. Bring the car in to have the code read.
What are common triggers of a check engine light?
A failed spark plug or ignition coil
What does “check engine” light usually mean?
The check engine light is a signal that the onboard diagnostics system (or OBD II) has detected a malfunction in the vehicle’s emissions, ignition, fuel or exhaust systems.