My guess is the light came on. Pulling the cable, will clear the codes from the computer. You can then wait until the light comes on again, and check again. Seems to be wishful thinking to me. Usually codes are cleared after you think you have solved the problem, you then check for the light to come back on and see if the same code is shown again. For some reason, the computer for my 3vze would take 50-70 miles to pick up a problem again, after clearing the computer. To make sure the computer wasn't bad, I manually triggered a code (pulled the egr sensor) when the light finally came on, it threw that code as well as the o2 code, that I was tracing. I was getting code 25BlueYota said:What prompted you to pull the codes? Pull the battery cable to reset the comp. and pull them again to see if they still show up. What exactly are you having troubles with?