F 250 4WD Super Duty V10-6.8L VIN Z CNG (2003)
P0170 - P0174: Testing and Inspection
P0171
OBD II - Base Gasoline
For diagnosis of code P0171 refer to chart
P0153 - P0230
If there is no link in the chart then:
P0170 - P0174: Testing and Inspection
P0171
OBD II - Base Gasoline
For diagnosis of code P0171 refer to chart
P0153 - P0230
If there is no link in the chart then: