Code 181

glowstang93

Dirt-Old 20+Year Member
Feb 9, 2003
846
6
39
Illinois
Well, its been a while, but I'm back with a problem, lol. Pulled a code 181 after the Check Engine Light popped on and off. Anyone have any quick checks or things to replace first? From what I have found so far, it shows a lean condition. Maybe changing out the fuel filter would be the easiest quickest thing to tryout first. Anyone agree?

Thanks in advance as always.
 
  • Sponsors (?)


Your fuel filter would have to be pretty nasty for it to be the cause. More likely, you have a vacuum leak somehwere, or one or more of your pre-cat 02 sensors is going bad.
 
I cleaned the maf sensor and cleared the code.
A secondary problem I had about a month ago was my air filter was saturated with oil. I thought I had it fixed by changing the pcv valve, but today I noticed there was still some oil in the air intake tube and at the throttle body. I guess it could be residual oil left in the air intake tube just flying up as air flows through. I currently have a K&N air filter and it doesn't appear to be soaked.