× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network

P0174 Diagnostic Trouble Code Discussion for March 2008

Fuel System Lean (Bank 2)

Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P0174
Help Request Posted
1998 Ford Ranger Splash 4.0L MIL Lamp on, P0171 & P0174 VIN: 1FTYR14X2W
P0174: Air fuel ratio too lean bank 2. After replacement of MAF & bank 2 O2 sensor, MIL returns same codes after 2nd drive cycle. PCV valve, dip stick, vacuum hoses, EGR valve all seem to be okay. No exhaust leaks. No knowledge of vapor management system, no test procedures available. Customer ...
March 05, 2008
1996 Ford F-150 Eddie Bauer 4.9L MIL Lamp on VIN: 1FTEF14YXT
P0174: bank 2 lean limit. Hello All, Looking for some input here. This truck has an MIL on with the 5 codes I listed below. While looking at data with the NGS the B2 fuel trim will max and sit there a little bit then go negative. After that B2 will work it's way up to +15 or 16 and bo...
March 10, 2008
1998 Ford E-350 Econoline XL 5.4L MIL Lamp on VIN: 1FDWE37L4W
P0174: System too lean bank 2. ... vehicle came in with check engine light on and P0171, P0174 were on memory. Live data was showing LFT -5 B1, LFT -3 B2, SFT -4 B1, SFT -2 or -3 B2, MAF 156 Hz, temp 195 the O2 were switching good. I smoked the engine and the only leak found was at the EGR ...
March 11, 2008
2005 Ford F-250 Super Duty Lariat 5.4L MIL Lamp on VIN: 1FTSX21505
P0174: Bank 2 lean. P0174, Bank 2 lean code. Fuel trims however show both banks lean. Thought we had this one fixed when we replaced the plugged fuel filter. Truck came back with same code. Fuel rail pressure holds at 39-40. Freeze frame st1= 2.3 st2= -3.9 LFT1=15 LFT2= 20. ECT= ...
March 12, 2008
1998 Ford Taurus SE Comfort 3.0L Poor Fuel Economy VIN: 1FAFP53S6W
P0174: lean bank 2. This is a coworkers personal ride) he has been getting poor mileage for last year. Egr code set first and he replaced it. code did not return but after another couple months P0171 and 174 started coming up, so he replaces the front O2 sensors After about every...
March 21, 2008
1999 Ford Ranger XL 3.0L MIL Lamp on VIN: 1FTZR15V11
P0174: lean. truck came in for service light. scaned system po171 and po174, bank 1 lean and bank 2 lean. idle in park is about 900. this is a metal intake, have replaced m.a.f., same problem.clear codes test drive 15 miles no light, let set about 10 min. and drive will re...
March 30, 2008
2002 Ford F-150 XL 4.2L MIL Lamp on VIN: 2FTRF17292
P0174: System Lean Bank 2. Hey guys, got a wierd one here.This F-150 has the mil lamp on and I have checked everything.The o2 sensors are all switching perfect. The truck runs great.I smoked it and there are no intake leaks.I used carb cleaner as well and no change. No misfire just one ...
March 31, 2008
2003 Jaguar S-Type 4.2L MIL Lamp on VIN: SAJGAQ3V63
P0174: lean - bank 2. Hello This supercharged S type R is setting lean codes for both banks. Car is very clean. LTFT 1s about 17 to 19%. STFT is always near 0%. It is easy to see that under high load fuel supply is ok. Both O2 sensors above 900mV. Very nice performance. Probl...
March 31, 2008