To retrieve the code(s) using the CEL (Check Engine Lite). Under the hood is the DTC connector, connect the dangling wire to the top right connection, now turn the Key ON and push throttle to the floor and hold it there during the flash out cycle, EXAMPLE, there will be a single flash (start of read out) then a series of flashes, like flash-flash which would be 2, then after a pause, another series of flashes like flash-flash-flash which would be 3, then you will have a code of 23, if more codes are STORED then a series of flashes will start after a pause, get a pencil and paper to write down the codes.
TO ERASE ALL CODES, TURN KEY OFF DURING THE ABOVE RETRIEVAL CYCLE.
Drive vehicle to see if codes return, sometimes certain codes require a start and drive five times.