This P0171 Code Is Pissing Me Off!!!!

[TegoXR]

The check engine has come on AGAIN after replacing both 02 sensors and cleaning the MAF...what a PITA! What should i check for?

 

[YOTALUVR]

It's telling you to remove those chrome rims. Lol jp

 

[TegoXR]

It's telling you to remove those chrome rims. Lol jp

Once I come across a set of 17" Tundra wheels lol.

 

[Acidmeld]

Replace the maf and check for vacuum leaks.

 

[PitbullRescuer]

Do you have a dry or oiled air filter? Also, any leaks or cracks in any of the rubber intake tubes or associated vacuum hoses?

 

[thor999]

+1 for oiled air filter, they gum up the MAS quickly!!! Also clean that whole section that leads to the MAS! How did you clean it? Did you maybe break the filament? And give it time to adjust to the changes, you may wind up like me, noticing fewer and fewer CEL's during the course of my repairs. If I had to venture a guess, I would believe your MAS is suspect; btw what brand O2 sensors did you replace with, and how did you figure out which ones did you need?

 

[TegoXR]

+1 for oiled air filter, they gum up the MAS quickly!!! Also clean that whole section that leads to the MAS! How did you clean it? Did you maybe break the filament? And give it time to adjust to the changes, you may wind up like me, noticing fewer and fewer CEL's during the course of my repairs. If I had to venture a guess, I would believe your MAS is suspect; btw what brand O2 sensors did you replace with, and how did you figure out which ones did you need?

My intake doesn't have a oiled air filter, both 02 sensor are Densos. When I cleaned my MAF sensor, and followed the DIY here.