Join Now
International Automotive Technicians Network

P0174 Diagnostic Trouble Code Discussion for November 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
1997 Ford F-150 4.2L MIL Lamp on VIN: 1FTDF1729V
P0174: system too lean bank 2. Vehicle came into our shop on 10/09/08 for smog test. Mil lamp was on and that is an automatic failure. Scanned system for trouble codes. Code PO174 in memory. Code set at 11 mph, 1254 rpm 180deg temp. Monitored emission data. LTFT BANK 1=3.9% LTFT BANK 2=10.9...
November 03, 2008
2000 BMW 740iL 4.4L Cuts out, Poor Fuel Economy VIN: WBAGH8346Y
P0174: system lean b2. We don't work on alot of European models, the vehicle cuts out on hard accel with no other driveability problems. I have scanned it, checked for crankcase vacuum with a snap on vac pump, and was ok, checked fuel pressure and stays above 50psi. The MAF reading,...
November 05, 2008
2000 Mazda MPV DX 2.5L Bucking, low power VIN: JM3LW28G6Y
P0174: Adaptive Fuel Trim Too Lean (Bank 2). Hello all, This MPV came in to us for intermittent low power and bucking. Pulled the codes seen above, and looked at data. The MAF is reading correctly right now as far as voltage is concerned, but the Genisys does not tell me calculated air flow, it has a PI...
November 06, 2008
2003 Ford Explorer XLT 4.0L Hesitation, MIL Lamp on VIN: 1FMZU63K63
P0174: system too lean bank 2. ... (4.0) with code P0174 ONLY. replaced upper intake manifold O rings, clean MAF sensor,came back after few days with same P0174. on my scanner interestingly I see . FUEL SYSTEM STATUS:bank 1 CLOSED. FUEL SYSTEM STATUS:BANK 2 DISABLED. and I see fuel trim num...
November 11, 2008
2003 Ford Explorer XLT 4.0L Hesitation, MIL Lamp on VIN: 1FMZU63K63
P0174: system too lean bank 2. ... (4.0) with code P0174 ONLY. replaced upper intake manifold O rings, clean MAF sensor,came back after few days with same P0174. on my scanner interestingly I see . FUEL SYSTEM STATUS:bank 1 CLOSED. FUEL SYSTEM STATUS:BANK 2 DISABLED. and I see fuel trim num...
November 12, 2008
2003 BMW 330i 3.0L MIL Lamp on VIN: WBAEV53443
P0174: adaptation to the limit mixture too lean bank 1. This car has the service engine soon light on with codes PO174 fuel mixture to lean limit bank 1 and code PO171 fuel mixture to lean limit bank 2. We have performed a fuel pressure test, checked for vacuum leaks, performed a smoke test to verify air leaks, all...
November 18, 2008
2000 Mazda MPV DX 2.5L Bucking, low power VIN: JM3LW28G6Y
P0174: Adaptive Fuel Trim Too Lean (Bank 2). Hello all, This MPV came in to us for intermittent low power and bucking. Pulled the codes seen above, and looked at data. The MAF is reading correctly right now as far as voltage is concerned, but the Genisys does not tell me calculated air flow, it has a PI...
November 18, 2008
1999 Mercury Sable LS 3.0L Misfire, MIL Lamp on VIN: 1MEFM53S2X
P0174: Lean exhaust bank2. Hello. I go this DOHC sable in due to check engine light and poor running. I drove it first and felt a miss at idle. Off idle it felt fine. I checked for codes and found misses on cylinder 1,2,and 3. Also lean exhaust bank2. This is what confuses me. Why is ba...
November 20, 2008
2000 Jaguar XJ8 4.0L Misfire, MIL Lamp on VIN: SAJDA14C8Y
P0174: bank 2 lean. Jaguar techs please help!!! Vehicle runs horribly rough & lacks power. Here's what we know so far: -Compression test shows Left bank (drivers) all cylinders approx 30 psi lower than right bank (Right all cyl approx 140 psi Left all cyl approx 110 psi)**No ...
November 24, 2008
2002 Ford F-150 XL 4.2L Poor Idle Quality, MIL Lamp on VIN: 1FTZX07231
P0174: bank 2 lean. ... two weeks later with a p0174 and a p0460. Truck runs OK, idles slightly rough. LTFT b1 is -2, b2 is 1. MAF is 4.17g/s, .79V. TPS closed is 1.01V (Isn't this a little high?). I smoke tested the intake hot, found no leaks, re...
November 28, 2008
1997 Ford F-150 4.2L MIL Lamp on VIN: 1FTDF1729V
P0174: system too lean bank 2. Vehicle came into our shop on 10/09/08 for smog test. Mil lamp was on and that is an automatic failure. Scanned system for trouble codes. Code PO174 in memory. Code set at 11 mph, 1254 rpm 180deg temp. Monitored emission data. LTFT BANK 1=3.9% LTFT BANK 2=10.9...
November 03, 2008
2000 BMW 740iL 4.4L Cuts out, Poor Fuel Economy VIN: WBAGH8346Y
P0174: system lean b2. We don't work on alot of European models, the vehicle cuts out on hard accel with no other driveability problems. I have scanned it, checked for crankcase vacuum with a snap on vac pump, and was ok, checked fuel pressure and stays above 50psi. The MAF reading,...
November 05, 2008
2000 Mazda MPV DX 2.5L Bucking, low power VIN: JM3LW28G6Y
P0174: Adaptive Fuel Trim Too Lean (Bank 2). Hello all, This MPV came in to us for intermittent low power and bucking. Pulled the codes seen above, and looked at data. The MAF is reading correctly right now as far as voltage is concerned, but the Genisys does not tell me calculated air flow, it has a PI...
November 06, 2008
2003 Ford Explorer XLT 4.0L Hesitation, MIL Lamp on VIN: 1FMZU63K63
P0174: system too lean bank 2. ... (4.0) with code P0174 ONLY. replaced upper intake manifold O rings, clean MAF sensor,came back after few days with same P0174. on my scanner interestingly I see . FUEL SYSTEM STATUS:bank 1 CLOSED. FUEL SYSTEM STATUS:BANK 2 DISABLED. and I see fuel trim num...
November 11, 2008
2003 Ford Explorer XLT 4.0L Hesitation, MIL Lamp on VIN: 1FMZU63K63
P0174: system too lean bank 2. ... (4.0) with code P0174 ONLY. replaced upper intake manifold O rings, clean MAF sensor,came back after few days with same P0174. on my scanner interestingly I see . FUEL SYSTEM STATUS:bank 1 CLOSED. FUEL SYSTEM STATUS:BANK 2 DISABLED. and I see fuel trim num...
November 12, 2008
2003 BMW 330i 3.0L MIL Lamp on VIN: WBAEV53443
P0174: adaptation to the limit mixture too lean bank 1. This car has the service engine soon light on with codes PO174 fuel mixture to lean limit bank 1 and code PO171 fuel mixture to lean limit bank 2. We have performed a fuel pressure test, checked for vacuum leaks, performed a smoke test to verify air leaks, all...
November 18, 2008
2000 Mazda MPV DX 2.5L Bucking, low power VIN: JM3LW28G6Y
P0174: Adaptive Fuel Trim Too Lean (Bank 2). Hello all, This MPV came in to us for intermittent low power and bucking. Pulled the codes seen above, and looked at data. The MAF is reading correctly right now as far as voltage is concerned, but the Genisys does not tell me calculated air flow, it has a PI...
November 18, 2008
1999 Mercury Sable LS 3.0L Misfire, MIL Lamp on VIN: 1MEFM53S2X
P0174: Lean exhaust bank2. Hello. I go this DOHC sable in due to check engine light and poor running. I drove it first and felt a miss at idle. Off idle it felt fine. I checked for codes and found misses on cylinder 1,2,and 3. Also lean exhaust bank2. This is what confuses me. Why is ba...
November 20, 2008
2000 Jaguar XJ8 4.0L Misfire, MIL Lamp on VIN: SAJDA14C8Y
P0174: bank 2 lean. Jaguar techs please help!!! Vehicle runs horribly rough & lacks power. Here's what we know so far: -Compression test shows Left bank (drivers) all cylinders approx 30 psi lower than right bank (Right all cyl approx 140 psi Left all cyl approx 110 psi)**No ...
November 24, 2008
2002 Ford F-150 XL 4.2L Poor Idle Quality, MIL Lamp on VIN: 1FTZX07231
P0174: bank 2 lean. ... two weeks later with a p0174 and a p0460. Truck runs OK, idles slightly rough. LTFT b1 is -2, b2 is 1. MAF is 4.17g/s, .79V. TPS closed is 1.01V (Isn't this a little high?). I smoke tested the intake hot, found no leaks, re...
November 28, 2008