Accidently pulled the IG ACG fuse which latched two codes, P0155, and P0135. Put the fuse back in, unhooked the battery, and cleared the code with a code reader. Still stays on, was wondering if this light will eventually go away, or will I have to just replace the O2 sensors. Any help is much appreciated!

 

What year, engine, etc. do you have?

 

It's a 2004 Accord Ex 3.0 V6 A/T

 

I don't understand about "latching" the codes? I don't think pulling any fuse will do that. The reason they don't seem to clear is that after you clear them they come right back unless the problem gets fixed.

 

After removing the fuse, the check engine light came on. So yes I would say the fuse may have something to do with the codes that came on. I haven't gotten a solid answer on what actually the IG ACG fuse does. It has something to do with the gasses that are realeased into the sensor. With the fuse pulled it wasnt able to perform the activity it is intended to do. Which cause the code to appear, or "latch."

 

that fuse is for the secondary oxygen sensor heater circuit (amongst other things), those codes are for the O2 heater circuits. also, how do you "accidentally" pull a fuse?

 

Read the number wrong. Trying to pull one next to it, ended up pulling that one, once it was done, it was to late.

 

OK so then that error code simply means that the heater circuit wasn't properly working (because of the pulled fuse).

2004 has non-volatile memory for the error codes. They can be cleared with a scan tool, or you can keep driving and they will clear themselves after some amount of driving (a week??). It might be that they need the Honda HDS scan tool, that's why a "normal" scan tool might not work?

 

I read somewhere about touching positive battery cables to the negative cable for about 15 seconds would reset it, but I'm not sure if that would be a smart route to go. Thanks very much for the help, I really appreciate it.

 

No, that won't help.

Here's the long story; ONLY for those cars where you CAN clear codes by disconnecting the battery (up to 2002 USA).
When you disconnect the battery cables, you may have residual voltage (in capacitors, etc) which will maintain the memory for a few minutes. There's a couple things you can do.

1) You can leave the battery disconnected for awhile. Some people say 15 or 20 minutes, I don't know firsthand how long is really necessary. That allows the residual voltage to decay away, at which point the memory will be lost.

2) You can disconnect the negative cable from the battery post & touch that cable to the positive post. Importantly, you are NOT shorting the battery. You are shorting the car. This will force system voltage to zero immediately. I don't like this method, because I can just imagine someone misinterpreting the instructions and shorting the battery cables together with the battery connected (sparks & fire).