I have seen it on a couple of Gas vehicles... I have an ECM to Blue tooth adapter and an app on my phone for the gassers.,., In one case that was the problem and un plugging it fixed it. In other cases Reading the codes gave great insight.
So the advice to have it scanned is good. many auto stores do free code scans at least on Gassers (Like Auto-Zone or O;Rilies)
One more thing Codes come in 3 flavors My names
Hard (persistent) can be read 3 days later (or more) stick till someone clears them with a code reader/clearer.
Soft: stick around till you turn the key off.
Passing: stick around till the problem clears.
NOTE the light.. may go out even while the code is remembered.