Code P0174 system too lean bank 2...
#1
Code P0174 system too lean bank 2...
I was coasting down a steep hill yesterday when the CEL came on. I pulled the code this morning and got code P0174, system too lean bank 2.
I cleared the code. Should I just wait to see if it happens again? The truck is running great. There is no sign of a problem.
BTW, it's 99 F150 5.4.
I cleared the code. Should I just wait to see if it happens again? The truck is running great. There is no sign of a problem.
BTW, it's 99 F150 5.4.
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<TABLE class=tborder cellSpacing=1 cellPadding=4 width="100%" align=center border=0><TBODY><TR title="Post 4185914" vAlign=top><TD class=alt1 align=middle width=125>clifftown2000</TD><TD class=alt2>i am getting the code p175 saying running rich bank 2 what should i do</TD></TR></TBODY></TABLE>
Clean your Mass Air Flow sensor with brake cleaner or electrical cleaner, something that dries clean with no residue. Let it air dry. DO NOT touch the fine wire in the sensor, it is very delicate and breaks easily. Reset the code after it is cleaned.
Clean your Mass Air Flow sensor with brake cleaner or electrical cleaner, something that dries clean with no residue. Let it air dry. DO NOT touch the fine wire in the sensor, it is very delicate and breaks easily. Reset the code after it is cleaned.
#14
The check engine light came back on! This time it was p0171, bank 1. I reset the code and then started to do some investigating. I started by removing the air intake to clean the mass air flow sensor and throttle body.
After I did that I checked all the vacuum lines. Wouldn't you know it, I found a bad connector! The rubber vacuum elbow on the fuel pressure regulator had a huge hole it it. It looks like something hot touched it or someone tried removing it with pliers and ripped it.
I installed a new one and cleared the code. That should fix the check engine light problem. Only time will tell....
After I did that I checked all the vacuum lines. Wouldn't you know it, I found a bad connector! The rubber vacuum elbow on the fuel pressure regulator had a huge hole it it. It looks like something hot touched it or someone tried removing it with pliers and ripped it.
I installed a new one and cleared the code. That should fix the check engine light problem. Only time will tell....