What causes codes p-171 and p-174

Asked by Jan 31, 2015 at 12:53 PM about the 2006 Ford F-250 Super Duty Lariat SuperCab 4WD LB

Question type: Maintenance & Repair

I checked for vacuum leaks and replaced MAF sensor. Could it be O2 sensors?

1 Answer

2,375

P0171 Intake air leaks Faulty front heated oxygen sensor Ignition misfiring Faulty fuel injectors Exhaust gas leaks Incorrect fuel pressure Lack of fuel Faulty Mass Air Flow (MAF) sensor Incorrect Positive Crankcase Ventilation (PCV) hose connection P0174 Intake air leaks Faulty front heated oxygen sensor Ignition misfiring Faulty fuel injectors Exhaust gas leaks Incorrect fuel pressure Lack of fuel Faulty Mass Air Flow (MAF) sensor Incorrect Positive Crankcase Ventilation (PCV) hose connection I would do a Fuel pressure test first.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Search Ford F-250 Super Duty Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Ford F-250 Super Duty Experts

#1 Tracy Hooks
Tracy Hooks
Reputation 690
#2 FordNut
FordNut
Reputation 650
#3 kbro
kbro
Reputation 590
View All

Related Models For Sale

Used Ford F-350 Super Duty
449 Great Deals out of 26,246 listings starting at $2,999
Used Ford F-150
3,083 Great Deals out of 208,274 listings starting at $1,200
Used Chevrolet Silverado 2500HD
402 Great Deals out of 27,284 listings starting at $2,998
Used Dodge Ram 2500
170 Great Deals out of 5,632 listings starting at $2,995
Used GMC Sierra 2500HD
150 Great Deals out of 13,201 listings starting at $3,500
Used Chevrolet Silverado 1500
2,602 Great Deals out of 151,930 listings starting at $1,500
Used Ford F-450 Super Duty
44 Great Deals out of 2,647 listings starting at $8,000
Used Toyota Tundra
685 Great Deals out of 28,145 listings starting at $2,798
Used GMC Sierra 1500
999 Great Deals out of 60,141 listings starting at $1,299
Used Dodge Ram 1500
533 Great Deals out of 13,075 listings starting at $1,800
Used Dodge Ram 3500
92 Great Deals out of 2,317 listings starting at $5,000
Used Toyota Tacoma
733 Great Deals out of 31,913 listings starting at $2,750

Used Cars For Sale

2017 Ford F-250 Super Duty For Sale
4 Great Deals out of 19,491 listings starting at $25,506
2016 Ford F-250 Super Duty For Sale
30 Great Deals out of 7,737 listings starting at $18,357
2015 Ford F-250 Super Duty For Sale
31 Great Deals out of 2,433 listings starting at $19,500
2014 Ford F-250 Super Duty For Sale
17 Great Deals out of 1,049 listings starting at $13,950
2013 Ford F-250 Super Duty For Sale
24 Great Deals out of 945 listings starting at $12,500