2002 Mercury Mountaineer code p171&codep172

DORIS G HICKS

MEMBER
2002 MERCURY MOUNTAINEER

Engine Performance problem
2002 Mercury Mountaineer V8 All Wheel Drive Automatic

my suv is cutting off mostly at stop light what does these codes mean?

Saturday, November 21st, 2009 AT 7:33 AM

1 Reply

RACEFAN966

MECHANIC
5,029 POSTS

These codes are as such. P0171 and P0172 is lean condition could be an O2 sensor or fuel injection or vacuum leak or? Now what I would like you to do first is unplug the Mass Air Flow Sensor and see if it idles better and dont stall. Get back to me with what you find here.