My check engine light came on, but it didnt stay on, so no code for me to check
WRONG
It stores the code even though it still doesn't see the fault. Its called a soft code. The original fault has stopped so the light went off BUT it retains the code.
Now if it stalls like the goofed the clutch and stalled it the check engine light will come back on and then you wont have a code but if it threw a light for any other reason it should still have a code stored as long as power to the ECM has not been interrupted.
