Hey guys, i just got the codes pulled and cleared from my car again. I got them pulled a few weeks ago and they read both O2 sensor heaters not working. So I put my extensions on and then the CEL came on again a couple hours later. I just said screw it. I was tired of trying to get that stupid light off. So i decided that today was the day to get the codes pulled again. i went to the mechanic at work and he pulled and cleared the codes this time. They read P0136 and P1151. These were new codes this time. I've read what they mean but what do they actually mean. How do you fix these two problems. I'm worried because the P1151 seems like it is saying my engine is running lean. What can i do to fix these 2 problems. Do i have to change O2 sensors, get a dyno tune (which i have wanted to get since my headswap but it seems to never happen) or what? Help please.