I got an SES light for rear o2's malfunctioning but I dont have any rear o2's. I had the computer sent out for a tune, but then later had it properly dyno tuned. About a few weeks after the dyno tune, the ses came on. I was kinda like "hmm interesting" and had the code cleared. Its been a few weeks and the same code has popped up. I want to clear it without going to my gas station but dont kno if its proper to pull a fuse or disconnect the battery. This is temporary cause it really urks me to see that light on, but I will go take it back to see whats up. I dont wanna lose my custom tune of course. Any safe ideas until i get it straightened out at the tuner? Thanks, btw...the car runs fine either way with the SES light on or off.

 

you can pull the PCM fuse and you won't lose your tune.

 

great, ill do it tomm, thanks for the answer.