Check Engine Light Code P0171..
#1
Check Engine Light Code P0171..
The Code P0171 popped on my 2004 Scion has 149,000 miles. I cleaned the the mass air flow sensor. I even swaped it out for the exact same one from my 2012 Tacoma and the code still popped.
I changed the air filter and and checked for any leaks coming from the hoses on my air intake box. the code keeps coming back???? and ideas???
_____
I changed the air filter and and checked for any leaks coming from the hoses on my air intake box. the code keeps coming back???? and ideas???
_____
Last edited by MR_LUV; 06-14-2019 at 05:37 PM.
#3
p0171
No after market parts. No other codes. I have tried a few things. changed the air filter. cleaned the mass airflow sensor, even swaped it out with the one from my truck. Each time I tried something I pulled the EFI fuse to reset the check engine light, and each time it came back. I've been told that pulling the EFI fuse will not erase the code from the computer so the light will come back on anyway.... I was told to try disconnecting the battery and that should erase the code???? any feed back on this. Also I've noticed that the light only comes on when I come to a stop, and sometimes it feels like it wants to die when its idling. The car does have a sounds system. A kicker amp with 1 12" subwoofer, nothing fancy.
Last edited by ridfolife16; 08-06-2014 at 01:06 AM.
#4
An update. last night I added zip ties to my vacuum line. this morning the car ran like a champ. idled perfect and ran great with no light for about fifty miles. I parked and came back to the car 10 mins later, drove a quarter mile stopped and the light came back on??????
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