2001 Ford Expedition XLT 5.4L MIL Lamp on
Car came in with Code po171. Cleaned MAF sensor no problems found with it. checked PCV hose for collapsing and for leaks none found. Cleared codes and customer came back a week later with code po171 again. Took a closer look at the o2 sensors and when I run th...
Summary posted 3/11/2008
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Vehicle Data2001 Ford Expedition XLT
Trouble Codes
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Message Closed w/Summary
Vehicle Data
2001 Ford Expedition XLT
VIN | 1FMPU16L51 |
Engine | 5.4 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI |
Emissions | OBD-II Compliant |
Symptoms | MIL Lamp On |
Occurs | Intermittently |
Trouble Codes
P0171 | Fuel System Too Lean (Bank 1) |