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P0174 Diagnostic Trouble Code Discussion for January 2006

Fuel System Lean (Bank 2)


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Trouble Ticket Help Requests for DTC P0174
Help Request Posted
1998 Ford F-150 Lariat 4.6L MIL Lamp on VIN: 1FTZX18W3W
P0174: system lean bank 2. after driving for about 20-25 min.[25 miles]it will set both codes at just about the same time.using scan tool we can not pick up on anything,all appears normal.the only thing we can see is the baro is about 137-140 hz.we are about 1200 feet and we think it sh...
January 02, 2006
2002 Ford Taurus SE 3.0L MIL Lamp on VIN: 1FAFP53252
P0174: system too lean bank 2. Help. I have this fleet of Flex Fuel Tauruses ( Tuari?) that are driving me nuts. Usually it is just bank 2 that sets the code although bank one has elevated fuel trims also, 10-18%. I have searched for vac leaks, tried power flushing the injectors, cleaning o...
January 04, 2006
1997 Ford F-350 7.5L MIL Lamp on VIN: 3FEKF37GXV
P0174: system too lean bank 2. Vehicle came in with check engine light on and codes stored in computer. I replaced Maf sensor but still had high short fuel trim numbers. Checked scanner and noticed when air PID changed to Atmosphere from upstream, that air was still going downstream to the ...
January 05, 2006
1994 Ford Thunderbird LX 4.6L Excessive Emissions VIN: 1FALP62W0R
P0174: lean air/fuel bank2. ... P0171/P0174 (LEAN air/fuel ratio bank 1&2) and P0402 (Excessive egr flow) MAF Baro was 126 Hz. our normal range in chicago is 156 to 159 Hz. We replaced MAF, EGR, EVR, DPFE, and both upst...
January 06, 2006
1997 Ford Explorer XL 4.0L MIL Lamp on, erroneous data VIN: 1FMDU34X8V
P0174: system lean bank 2/pending. Has anyone run into this problem other than me? the vehicle came in with the mil on and no drivability complaint. the codes were po171 and po174, bank 1 and 2 lean, the snapshot showed reasonably centered fuel trim(long and short term)and the baro on manfact...
January 06, 2006
1997 Ford F-350 7.5L MIL Lamp on VIN: 3FEKF37GXV
P0174: system too lean bank 2. Vehicle came in with check engine light on and codes stored in computer. I replaced Maf sensor but still had high short fuel trim numbers. Checked scanner and noticed when air PID changed to Atmosphere from upstream, that air was still going downstream to the ...
January 10, 2006
2002 Lincoln Continental 4.6L Surge, Poor Fuel Economy, MIL Lamp on, Lean Condition VIN: 1LNHM97V32
P0174: Lean Exhaust Bank 2. ... Checked codes: P0171 & P0174 (banks 1 and 2, system lean). Snap-On scanner confirmed extremely lean condition taking place. TSB 04-17-4 addresses these codes (and other codes) as relating to a vacuum leak. We have smoked the engine as well as changed t...
January 10, 2006
1999 Chevrolet Silverado 1500 5.3L MIL Lamp on VIN: 2GCEK19TXX
P0174: Fuel Trim System Lean (Bank 2). Thanks in advance for your time. This truck came in with MIL on. Was running OK. It had lean codes, both banks. Test drive was OK. Long term fuel trim +25 both banks. IAC counts very low. Tested fuel system. Pressure OK, flow poor, waveform on pump motor very ...
January 11, 2006
1995 Mercury Grand Marquis LS 4.6L MIL Lamp on VIN: 2MELM75W1S
P0174: System Too Lean Bank 2. Hello all I have this car that has been to us twice now with the same codes. Car has no drivibility problems other than light is on. First time it took over two weeks of daily driving to come on again and second time was a little less. We have been unable to l...
January 12, 2006
2000 Ford E-250 Econoline 5.4L MIL Lamp on
... a P0172 P0175 P0302. The Baro reading was 142hrtz ( normal here is 154hrtz ) Fuel pressure was high and #2 injector screen was clogged. I removed and cleaned all injectors screen, replaced fuel pressure regulator, fuel fi...
January 15, 2006
2004 Ford E-250 5.4L MIL Lamp on
P0174: bank2 lean. hello group, sorry about no vin, this pretains to a fleet of 2004 e-250 vans with a mil with always the same codes on on every model. fuel trim short and long term look ok, fuel pressure is ok, no vac leaks found. vans run good just mil on. i tried a maf on on...
January 15, 2006
1999 Ford Contour LX 2.5L Stall, MIL Lamp on VIN: 1MEFM66L6X
P0174: fuel sys. lean. MORE INFO AT IDLE WHEN WARMED UP ENG SPD. 805RPM COOL TEMP. 98 C CLSD. LOOP AIR INTAKE TEMP 10 C MAF 3.48gm/s THROTTLE ANGLE 17.6% VEH. SPD. 0KM/H LTFT BANK 1 6.25% STFT BANK 1 0.00% O2 B1S1 265 MV O2 B1S2 85 MV LTFT BANK 2 25.00% STFT BANK 2 +32.81% O2 B2S1 ...
January 19, 2006
1999 Ford Explorer XL 4.0L Poor Idle Quality, MIL Lamp on VIN: 1FMZU32X4X
P0174: lean bank 2. This explorer belongs to a mail lady, she has the country route so she mainly idles all day, from mail box to mail box. Her main complaint is that the truck dies from time to time but it will start right back up, and engine light on. When I tuned up I noticed ...
January 20, 2006
1999 Ford Explorer XL 4.0L Poor Idle Quality, MIL Lamp on VIN: 1FMZU32X4X
P0174: lean bank 2. This explorer belongs to a mail lady, she has the country route so she mainly idles all day, from mail box to mail box. Her main complaint is that the truck dies from time to time but it will start right back up, and engine light on. When I tuned up I noticed ...
January 23, 2006
2002 Ford F-150 Lightning 5.4L Hesitation, MIL Lamp on, NO POWER VIN: 2FTZF07352
P0174: lean bank 2. ... it's way. any hard acceleration the truck falls on it's face. feels like the air cleaner has come apart and plugging up the intake, but is not the case. can baby slightly and get to go, but won't really go over 45 mph. the ford lightning has a lean code p0...
January 23, 2006
1999 Ford Ranger XL 3.0L Hesitation, Surge, MIL Lamp on VIN: 1FTYR10V2X
P0174: bank 2 system lean. 1ST DISPATCHED; WAS TO SCAN CEL. DATA/CODES. THIS IS A FLEX FUEL 2WD RANGER.I SEE OVER $750.00 IN PARTS HAVE BEEN THROWN AT THIS BY SEVERAL LOCAL SHOPS. O.K. I LOVE A CHALLENGE. 5 HOURS,I'M STUMPED.I MUST BE OVERLOOKING SOMETHING BASIC. ??? FUEL TRIM #'s ARE T...
January 24, 2006
1997 Ford Expedition XLT 5.4L MIL Lamp on VIN: 1FMFV18L4V
P0174: system lean bank 2. will not get code when at idle,only at 1500 rpm or higher/runs ok /no vacuum leaks
January 25, 2006
1999 Ford Contour LX 2.5L Stall, MIL Lamp on VIN: 1MEFM66L6X
P0174: fuel sys. lean. MORE INFO AT IDLE WHEN WARMED UP ENG SPD. 805RPM COOL TEMP. 98 C CLSD. LOOP AIR INTAKE TEMP 10 C MAF 3.48gm/s THROTTLE ANGLE 17.6% VEH. SPD. 0KM/H LTFT BANK 1 6.25% STFT BANK 1 0.00% O2 B1S1 265 MV O2 B1S2 85 MV LTFT BANK 2 25.00% STFT BANK 2 +32.81% O2 B2S1 ...
January 26, 2006
2000 Ford Explorer Eddie Bauer 4.0L Poor Fuel Economy, MIL Lamp on VIN: 1FMZU64E8Y
P0174: lean. ... Customer comes in and requests to have a tune up and brake check. Customer had no complaints about performance. We did plugs, wires,pcv and filters. Customer returns two weeks later with poor gas mileage complaint and check engine light on. Pull codes P017...
January 27, 2006
2002 Ford F-150 Lightning 5.4L Hesitation, MIL Lamp on, NO POWER VIN: 2FTZF07352
P0174: lean bank 2. ... it's way. any hard acceleration the truck falls on it's face. feels like the air cleaner has come apart and plugging up the intake, but is not the case. can baby slightly and get to go, but won't really go over 45 mph. the ford lightning has a lean code p0...
January 30, 2006
2000 Ford E-250 Econoline 5.4L MIL Lamp on
... a P0172 P0175 P0302. The Baro reading was 142hrtz ( normal here is 154hrtz ) Fuel pressure was high and #2 injector screen was clogged. I removed and cleaned all injectors screen, replaced fuel pressure regulator, fuel fi...
January 31, 2006
2004 Land Rover Discovery SE 4.6L Misfire, Low Power VIN: SALTY19424
P0174: Bank 2 Too Lean. Hi! This isn't for me, but a friend of mine. This Discovery will fall on it's face at random times. Full throttle... Light Throttle doesn't matter. We're talking like nothing. It's unsafe when it happens, it acually will stop accelerating. The dealer can't g...
January 31, 2006
1998 Ford F-150 Lariat 4.6L MIL Lamp on VIN: 1FTZX18W3W
P0174: system lean bank 2. after driving for about 20-25 min.[25 miles]it will set both codes at just about the same time.using scan tool we can not pick up on anything,all appears normal.the only thing we can see is the baro is about 137-140 hz.we are about 1200 feet and we think it sh...
January 02, 2006
2002 Ford Taurus SE 3.0L MIL Lamp on VIN: 1FAFP53252
P0174: system too lean bank 2. Help. I have this fleet of Flex Fuel Tauruses ( Tuari?) that are driving me nuts. Usually it is just bank 2 that sets the code although bank one has elevated fuel trims also, 10-18%. I have searched for vac leaks, tried power flushing the injectors, cleaning o...
January 04, 2006
1997 Ford F-350 7.5L MIL Lamp on VIN: 3FEKF37GXV
P0174: system too lean bank 2. Vehicle came in with check engine light on and codes stored in computer. I replaced Maf sensor but still had high short fuel trim numbers. Checked scanner and noticed when air PID changed to Atmosphere from upstream, that air was still going downstream to the ...
January 05, 2006
1994 Ford Thunderbird LX 4.6L Excessive Emissions VIN: 1FALP62W0R
P0174: lean air/fuel bank2. ... P0171/P0174 (LEAN air/fuel ratio bank 1&2) and P0402 (Excessive egr flow) MAF Baro was 126 Hz. our normal range in chicago is 156 to 159 Hz. We replaced MAF, EGR, EVR, DPFE, and both upst...
January 06, 2006
1997 Ford Explorer XL 4.0L MIL Lamp on, erroneous data VIN: 1FMDU34X8V
P0174: system lean bank 2/pending. Has anyone run into this problem other than me? the vehicle came in with the mil on and no drivability complaint. the codes were po171 and po174, bank 1 and 2 lean, the snapshot showed reasonably centered fuel trim(long and short term)and the baro on manfact...
January 06, 2006
1997 Ford F-350 7.5L MIL Lamp on VIN: 3FEKF37GXV
P0174: system too lean bank 2. Vehicle came in with check engine light on and codes stored in computer. I replaced Maf sensor but still had high short fuel trim numbers. Checked scanner and noticed when air PID changed to Atmosphere from upstream, that air was still going downstream to the ...
January 10, 2006
2002 Lincoln Continental 4.6L Surge, Poor Fuel Economy, MIL Lamp on, Lean Condition VIN: 1LNHM97V32
P0174: Lean Exhaust Bank 2. ... Checked codes: P0171 & P0174 (banks 1 and 2, system lean). Snap-On scanner confirmed extremely lean condition taking place. TSB 04-17-4 addresses these codes (and other codes) as relating to a vacuum leak. We have smoked the engine as well as changed t...
January 10, 2006
1999 Chevrolet Silverado 1500 5.3L MIL Lamp on VIN: 2GCEK19TXX
P0174: Fuel Trim System Lean (Bank 2). Thanks in advance for your time. This truck came in with MIL on. Was running OK. It had lean codes, both banks. Test drive was OK. Long term fuel trim +25 both banks. IAC counts very low. Tested fuel system. Pressure OK, flow poor, waveform on pump motor very ...
January 11, 2006
1995 Mercury Grand Marquis LS 4.6L MIL Lamp on VIN: 2MELM75W1S
P0174: System Too Lean Bank 2. Hello all I have this car that has been to us twice now with the same codes. Car has no drivibility problems other than light is on. First time it took over two weeks of daily driving to come on again and second time was a little less. We have been unable to l...
January 12, 2006
2000 Ford E-250 Econoline 5.4L MIL Lamp on
... a P0172 P0175 P0302. The Baro reading was 142hrtz ( normal here is 154hrtz ) Fuel pressure was high and #2 injector screen was clogged. I removed and cleaned all injectors screen, replaced fuel pressure regulator, fuel fi...
January 15, 2006
2004 Ford E-250 5.4L MIL Lamp on
P0174: bank2 lean. hello group, sorry about no vin, this pretains to a fleet of 2004 e-250 vans with a mil with always the same codes on on every model. fuel trim short and long term look ok, fuel pressure is ok, no vac leaks found. vans run good just mil on. i tried a maf on on...
January 15, 2006
1999 Ford Contour LX 2.5L Stall, MIL Lamp on VIN: 1MEFM66L6X
P0174: fuel sys. lean. MORE INFO AT IDLE WHEN WARMED UP ENG SPD. 805RPM COOL TEMP. 98 C CLSD. LOOP AIR INTAKE TEMP 10 C MAF 3.48gm/s THROTTLE ANGLE 17.6% VEH. SPD. 0KM/H LTFT BANK 1 6.25% STFT BANK 1 0.00% O2 B1S1 265 MV O2 B1S2 85 MV LTFT BANK 2 25.00% STFT BANK 2 +32.81% O2 B2S1 ...
January 19, 2006
1999 Ford Explorer XL 4.0L Poor Idle Quality, MIL Lamp on VIN: 1FMZU32X4X
P0174: lean bank 2. This explorer belongs to a mail lady, she has the country route so she mainly idles all day, from mail box to mail box. Her main complaint is that the truck dies from time to time but it will start right back up, and engine light on. When I tuned up I noticed ...
January 20, 2006
1999 Ford Explorer XL 4.0L Poor Idle Quality, MIL Lamp on VIN: 1FMZU32X4X
P0174: lean bank 2. This explorer belongs to a mail lady, she has the country route so she mainly idles all day, from mail box to mail box. Her main complaint is that the truck dies from time to time but it will start right back up, and engine light on. When I tuned up I noticed ...
January 23, 2006
2002 Ford F-150 Lightning 5.4L Hesitation, MIL Lamp on, NO POWER VIN: 2FTZF07352
P0174: lean bank 2. ... it's way. any hard acceleration the truck falls on it's face. feels like the air cleaner has come apart and plugging up the intake, but is not the case. can baby slightly and get to go, but won't really go over 45 mph. the ford lightning has a lean code p0...
January 23, 2006
1999 Ford Ranger XL 3.0L Hesitation, Surge, MIL Lamp on VIN: 1FTYR10V2X
P0174: bank 2 system lean. 1ST DISPATCHED; WAS TO SCAN CEL. DATA/CODES. THIS IS A FLEX FUEL 2WD RANGER.I SEE OVER $750.00 IN PARTS HAVE BEEN THROWN AT THIS BY SEVERAL LOCAL SHOPS. O.K. I LOVE A CHALLENGE. 5 HOURS,I'M STUMPED.I MUST BE OVERLOOKING SOMETHING BASIC. ??? FUEL TRIM #'s ARE T...
January 24, 2006
1997 Ford Expedition XLT 5.4L MIL Lamp on VIN: 1FMFV18L4V
P0174: system lean bank 2. will not get code when at idle,only at 1500 rpm or higher/runs ok /no vacuum leaks
January 25, 2006
1999 Ford Contour LX 2.5L Stall, MIL Lamp on VIN: 1MEFM66L6X
P0174: fuel sys. lean. MORE INFO AT IDLE WHEN WARMED UP ENG SPD. 805RPM COOL TEMP. 98 C CLSD. LOOP AIR INTAKE TEMP 10 C MAF 3.48gm/s THROTTLE ANGLE 17.6% VEH. SPD. 0KM/H LTFT BANK 1 6.25% STFT BANK 1 0.00% O2 B1S1 265 MV O2 B1S2 85 MV LTFT BANK 2 25.00% STFT BANK 2 +32.81% O2 B2S1 ...
January 26, 2006
2000 Ford Explorer Eddie Bauer 4.0L Poor Fuel Economy, MIL Lamp on VIN: 1FMZU64E8Y
P0174: lean. ... Customer comes in and requests to have a tune up and brake check. Customer had no complaints about performance. We did plugs, wires,pcv and filters. Customer returns two weeks later with poor gas mileage complaint and check engine light on. Pull codes P017...
January 27, 2006
2002 Ford F-150 Lightning 5.4L Hesitation, MIL Lamp on, NO POWER VIN: 2FTZF07352
P0174: lean bank 2. ... it's way. any hard acceleration the truck falls on it's face. feels like the air cleaner has come apart and plugging up the intake, but is not the case. can baby slightly and get to go, but won't really go over 45 mph. the ford lightning has a lean code p0...
January 30, 2006
2000 Ford E-250 Econoline 5.4L MIL Lamp on
... a P0172 P0175 P0302. The Baro reading was 142hrtz ( normal here is 154hrtz ) Fuel pressure was high and #2 injector screen was clogged. I removed and cleaned all injectors screen, replaced fuel pressure regulator, fuel fi...
January 31, 2006
2004 Land Rover Discovery SE 4.6L Misfire, Low Power VIN: SALTY19424
P0174: Bank 2 Too Lean. Hi! This isn't for me, but a friend of mine. This Discovery will fall on it's face at random times. Full throttle... Light Throttle doesn't matter. We're talking like nothing. It's unsafe when it happens, it acually will stop accelerating. The dealer can't g...
January 31, 2006