Discussion Starter · #1 ·
Hi, I just joined the forum and I want to thank you all in advance for any info you can give me on this code. I have a scanner that I just got a few days ago and I'm still learning on it. I know the code has to do with bank 1 low emissions efficiency. I tore the engine down a couple of months ago because I bought it with a blown head gasket. No signs out the exhaust, all the compression was going into the cooling system. Anyhow, after fixing several things besides the head gasket, when I put it in on the road it started throwing this code. It has been a day or two since I was under it, but I believe it only has 1 cat and I think 3 02 sensors. I watched the scanner when it was hooked up with the van running and all 3 02 sensors seemed to be acting alike. From what I can find out the one after the cat is supposed to kind of flatline and not bounce around on the voltage like the 2 before the cat. If I am right, this means the cat needs replacing. I am kind of an old school mechanic and grew up on cars with carbureators and distributors with points and condensors. SIGH !!! I wish I had my 57 Chevy's and my 66 Mustang back ( Sorry I know this is a GM site, but I have owned them all and I really liked the 50's and 60's cars when they knew what hotrods were). I have turned wrenches for 30 years but I'm not used to the newer vehicles. If anyone has had this code and knows what the fix is please let me know. It costs way too much to just start buying parts.