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P0174 Diagnostic Trouble Code Discussion for January 2007

Fuel System Lean (Bank 2)


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Trouble Ticket Help Requests for DTC P0174
Help Request Posted
2001 GMC Sierra 1500 SL 4.8L Poor Idle Quality, Misfire VIN: 2GTEC19V51
P0174: Fuel Trim System Lean (Bank 2). ... idle complaint... I checked it when it came in and had a P0171 and P0174 lean codes... sprayed carb cleaner around looking for a vacum leak and noticed my long term seemed to change when I soaked the intake runner so I tr...
January 03, 2007
2001 GMC Sierra 1500 SL 4.8L Poor Idle Quality, Misfire VIN: 2GTEC19V51
P0174: Fuel Trim System Lean (Bank 2). ... idle complaint... I checked it when it came in and had a P0171 and P0174 lean codes... sprayed carb cleaner around looking for a vacum leak and noticed my long term seemed to change when I soaked the intake runner so I tr...
January 04, 2007
1997 Ford Explorer XL 4.0L Poor Idle Quality, Poor Fuel Economy, MIL Lamp on VIN: 1FMDU34X5V
P0174: system lean bank 2. ... OTHER SHOPS, CAME IN WITH CHECK ENGINE LIGHT ON AND POOR GAS MILEAGE COMPLAINT. CUSTOMER HAS BEEN TO SEVERAL OTHER SHOPS THEY HAVE REPLACED MAF,O2 SENSORS,INTAKE MANIFOLD GASKETS, PCM BEEN REFLASHED, CAR HAS BEEN SMOKED AND NO LEAKS FOUND, FUEL PRESSURE HA...
January 09, 2007
2004 Ford Taurus SE 3.0L No Start, Poor Idle Quality, MIL Lamp on VIN: 1FAHP53U14
P0174: Bank 2 lean. Car will start and barely run at half throttle. Carb spray will keep it running at closed throttle. I have spark, injector pulse, and my fuel pressure seems to vary between 40 and 60psi. Spark plugs and fuel filter were original, spark plugs fouled but too muc...
January 10, 2007
1999 Ford Windstar LX 3.8L MIL Lamp on VIN: 2FMZA5142X
P0174: bank 2 lean. ... mil lamp was on, same two codes p0171 p0174. fuel pressure was good, but flow was bad. fuel filter was plugged (had the original). checked for vacuum leaks and egr function. all appear ok. no codes for injector malfunction. is this about the right time for...
January 13, 2007
2001 Mitsubishi Montero Sport LS 3.0L MIL Lamp on VIN: JA4LS21HS1
P0174: Bank 2 system lean. Repaired code po0443 with new evap purge solonoid. Car returned with po174 Bank#2 system lean. checked for vacumn leaks with smoke machine; verified o2 crosscounts. What I need is a good starting point for a diagnostic plan. If some one has seen this before an...
January 16, 2007
1998 Ford E-250 Econoline 4.2L MIL Lamp on VIN: 1FTPE1429W
P0174: bank 2 system lean. Long term fuel trims are both at 25% and short term are mid teens at Idle or high idle. Driving vehicle under load long terms are 5 to 7 and short terms fluctuate +/-, but as soon as you let up or maintain cruising speed long terms return to 25%. Bleeding prop...
January 18, 2007
2001 Ford E-150 Econoline 4.2L MIL Lamp on VIN: 1FTRE14201
P0174: lean bank. When I got this the mil light is on with code po 171 and po 174 Fuel pressure is good so I immediately check for vacuum leaks with a propane sniffer and checked the manifold as well as the pcv connections and found no leaks, Even used carb cleaner but no leaks...
January 18, 2007
1995 Lincoln Continental Diamond Anniversary 4.6L MIL Lamp on VIN: 1LNLM97V2S
P0174: lean bank 2. hey guys,this one is strange.blowing lean codes,short term fuel trim pegged at 25%.long term creeping right behind it everytime we reset the fuel trim.os sensors stay at .02v.at idle pulse width at 2.6ms.no vacuum leaks.current baro is 150(still a little low)i...
January 18, 2007
2002 Ford F-150 King Ranch 4.6L Poor Idle Quality, Misfire, MIL Lamp on, no power VIN: 1FTRW07632
P0174: Lean. Truck came in with no history. It is owned my local poilce. Was aquired threw drug deal. Trucks runs sluggish and misses. Cylinder head temp sensor is reading 392 degrees. Installed new cht sensor with no change. Tried different scanner with same results. Chec...
January 19, 2007
2002 Ford F-150 King Ranch 4.6L Poor Idle Quality, Misfire, MIL Lamp on, no power VIN: 1FTRW07632
P0174: Lean. Truck came in with no history. It is owned my local poilce. Was aquired threw drug deal. Trucks runs sluggish and misses. Cylinder head temp sensor is reading 392 degrees. Installed new cht sensor with no change. Tried different scanner with same results. Chec...
January 22, 2007
1997 Lincoln Continental Spinmaker Edition 4.6L Poor Fuel Economy, MIL Lamp on VIN: 1NLNM97V6V
P0174: Bank 2 Lean. Car runs quite well with the exception of the Mil. I replaced the MAF because it was giving me a Baro PID of 144Hz or about 6000 ft at sea level. The new unit reads 149Hz or about 3330 ft(at sea level). I also replaced the PCV valve as someone else had just do...
January 24, 2007
1999 Ford Explorer XL 4.0L MIL Lamp on VIN: 1FMZU32XUB
P0174: system too lean bank2. hey guys, the fuel trims are way off on this vehicle. the baro is reading good at 157hz. no vacuum leaks tried carb cleaner and smoke tester. also i was looking at the fuel trims while i was testing and they did not change.long term fuel trim is at 21 to 25.sh...
January 26, 2007
2000 Ford F-150 XL 4.2L spark knock VIN: 1FTZX1729Y
P0174: system too lean bank 2. THIS TRUCK CAME INTO MY SHOP WITH SPARK KNOCK AND A SES LIGHT ON. FOUND THAT BANK 2 WAS SHOWING LEAN. FOUND NO PROBLEMS WITH THE ENGINE, NO VACUUM LEAKS FOUND. And the fuel pressure is within specs. . We have also cleaned the EGR system and check the EGR val...
January 29, 2007
2004 Ford F-150 Heritage XL 4.6L Poor Idle Quality, MIL Lamp on, NO POWER VIN: 2FTRX18W24
P0174: system too lean bank 2. ... FLAT (!!) on 3/4 to full acceleration. It hardly crawls up a hill. Two months ago we serviced this vehicle for a dead miss. At that time we had misfire codes along with lean running codes (P0171 & P0174). Replaced 2 injectors on Bank 1. Did a tune up w...
January 29, 2007
2000 Ford Explorer XLT 4.0L MIL Lamp on VIN: 1FMZU73X8Y
P0174: Bank-2 Lean. Very confused on this one. Code P0171 & 0174 stored. Fuel trims are perfect. No tsb's on re-flashing. Freeze frame failure records show that fuel trims are at 25 when codes set. Unable to recreate condition. No vacuum leaks found with the intake system( sm...
January 30, 2007
2003 Ford Windstar SE 3.8L MIL Lamp on VIN: 2FMZA52413
P0174: bank two lean. i have this windstar that i need help with, it keeps coming back with the po.171,po174, codes.{lean bank 1 and 2} i have replaced the upper intake orings and the vacum line for the fuel pressure regalator.. i have tryed fuel cleaner spray around the lower inta...
January 30, 2007
1997 Lincoln Continental Spinmaker Edition 4.6L Poor Fuel Economy, MIL Lamp on VIN: 1NLNM97V6V
P0174: Bank 2 Lean. Car runs quite well with the exception of the Mil. I replaced the MAF because it was giving me a Baro PID of 144Hz or about 6000 ft at sea level. The new unit reads 149Hz or about 3330 ft(at sea level). I also replaced the PCV valve as someone else had just do...
January 31, 2007
2001 GMC Sierra 1500 SL 4.8L Poor Idle Quality, Misfire VIN: 2GTEC19V51
P0174: Fuel Trim System Lean (Bank 2). ... idle complaint... I checked it when it came in and had a P0171 and P0174 lean codes... sprayed carb cleaner around looking for a vacum leak and noticed my long term seemed to change when I soaked the intake runner so I tr...
January 03, 2007
2001 GMC Sierra 1500 SL 4.8L Poor Idle Quality, Misfire VIN: 2GTEC19V51
P0174: Fuel Trim System Lean (Bank 2). ... idle complaint... I checked it when it came in and had a P0171 and P0174 lean codes... sprayed carb cleaner around looking for a vacum leak and noticed my long term seemed to change when I soaked the intake runner so I tr...
January 04, 2007
1997 Ford Explorer XL 4.0L Poor Idle Quality, Poor Fuel Economy, MIL Lamp on VIN: 1FMDU34X5V
P0174: system lean bank 2. ... OTHER SHOPS, CAME IN WITH CHECK ENGINE LIGHT ON AND POOR GAS MILEAGE COMPLAINT. CUSTOMER HAS BEEN TO SEVERAL OTHER SHOPS THEY HAVE REPLACED MAF,O2 SENSORS,INTAKE MANIFOLD GASKETS, PCM BEEN REFLASHED, CAR HAS BEEN SMOKED AND NO LEAKS FOUND, FUEL PRESSURE HA...
January 09, 2007
2004 Ford Taurus SE 3.0L No Start, Poor Idle Quality, MIL Lamp on VIN: 1FAHP53U14
P0174: Bank 2 lean. Car will start and barely run at half throttle. Carb spray will keep it running at closed throttle. I have spark, injector pulse, and my fuel pressure seems to vary between 40 and 60psi. Spark plugs and fuel filter were original, spark plugs fouled but too muc...
January 10, 2007
1999 Ford Windstar LX 3.8L MIL Lamp on VIN: 2FMZA5142X
P0174: bank 2 lean. ... mil lamp was on, same two codes p0171 p0174. fuel pressure was good, but flow was bad. fuel filter was plugged (had the original). checked for vacuum leaks and egr function. all appear ok. no codes for injector malfunction. is this about the right time for...
January 13, 2007
2001 Mitsubishi Montero Sport LS 3.0L MIL Lamp on VIN: JA4LS21HS1
P0174: Bank 2 system lean. Repaired code po0443 with new evap purge solonoid. Car returned with po174 Bank#2 system lean. checked for vacumn leaks with smoke machine; verified o2 crosscounts. What I need is a good starting point for a diagnostic plan. If some one has seen this before an...
January 16, 2007
1998 Ford E-250 Econoline 4.2L MIL Lamp on VIN: 1FTPE1429W
P0174: bank 2 system lean. Long term fuel trims are both at 25% and short term are mid teens at Idle or high idle. Driving vehicle under load long terms are 5 to 7 and short terms fluctuate +/-, but as soon as you let up or maintain cruising speed long terms return to 25%. Bleeding prop...
January 18, 2007
2001 Ford E-150 Econoline 4.2L MIL Lamp on VIN: 1FTRE14201
P0174: lean bank. When I got this the mil light is on with code po 171 and po 174 Fuel pressure is good so I immediately check for vacuum leaks with a propane sniffer and checked the manifold as well as the pcv connections and found no leaks, Even used carb cleaner but no leaks...
January 18, 2007
1995 Lincoln Continental Diamond Anniversary 4.6L MIL Lamp on VIN: 1LNLM97V2S
P0174: lean bank 2. hey guys,this one is strange.blowing lean codes,short term fuel trim pegged at 25%.long term creeping right behind it everytime we reset the fuel trim.os sensors stay at .02v.at idle pulse width at 2.6ms.no vacuum leaks.current baro is 150(still a little low)i...
January 18, 2007
2002 Ford F-150 King Ranch 4.6L Poor Idle Quality, Misfire, MIL Lamp on, no power VIN: 1FTRW07632
P0174: Lean. Truck came in with no history. It is owned my local poilce. Was aquired threw drug deal. Trucks runs sluggish and misses. Cylinder head temp sensor is reading 392 degrees. Installed new cht sensor with no change. Tried different scanner with same results. Chec...
January 19, 2007
2002 Ford F-150 King Ranch 4.6L Poor Idle Quality, Misfire, MIL Lamp on, no power VIN: 1FTRW07632
P0174: Lean. Truck came in with no history. It is owned my local poilce. Was aquired threw drug deal. Trucks runs sluggish and misses. Cylinder head temp sensor is reading 392 degrees. Installed new cht sensor with no change. Tried different scanner with same results. Chec...
January 22, 2007
1997 Lincoln Continental Spinmaker Edition 4.6L Poor Fuel Economy, MIL Lamp on VIN: 1NLNM97V6V
P0174: Bank 2 Lean. Car runs quite well with the exception of the Mil. I replaced the MAF because it was giving me a Baro PID of 144Hz or about 6000 ft at sea level. The new unit reads 149Hz or about 3330 ft(at sea level). I also replaced the PCV valve as someone else had just do...
January 24, 2007
1999 Ford Explorer XL 4.0L MIL Lamp on VIN: 1FMZU32XUB
P0174: system too lean bank2. hey guys, the fuel trims are way off on this vehicle. the baro is reading good at 157hz. no vacuum leaks tried carb cleaner and smoke tester. also i was looking at the fuel trims while i was testing and they did not change.long term fuel trim is at 21 to 25.sh...
January 26, 2007
2000 Ford F-150 XL 4.2L spark knock VIN: 1FTZX1729Y
P0174: system too lean bank 2. THIS TRUCK CAME INTO MY SHOP WITH SPARK KNOCK AND A SES LIGHT ON. FOUND THAT BANK 2 WAS SHOWING LEAN. FOUND NO PROBLEMS WITH THE ENGINE, NO VACUUM LEAKS FOUND. And the fuel pressure is within specs. . We have also cleaned the EGR system and check the EGR val...
January 29, 2007
2004 Ford F-150 Heritage XL 4.6L Poor Idle Quality, MIL Lamp on, NO POWER VIN: 2FTRX18W24
P0174: system too lean bank 2. ... FLAT (!!) on 3/4 to full acceleration. It hardly crawls up a hill. Two months ago we serviced this vehicle for a dead miss. At that time we had misfire codes along with lean running codes (P0171 & P0174). Replaced 2 injectors on Bank 1. Did a tune up w...
January 29, 2007
2000 Ford Explorer XLT 4.0L MIL Lamp on VIN: 1FMZU73X8Y
P0174: Bank-2 Lean. Very confused on this one. Code P0171 & 0174 stored. Fuel trims are perfect. No tsb's on re-flashing. Freeze frame failure records show that fuel trims are at 25 when codes set. Unable to recreate condition. No vacuum leaks found with the intake system( sm...
January 30, 2007
2003 Ford Windstar SE 3.8L MIL Lamp on VIN: 2FMZA52413
P0174: bank two lean. i have this windstar that i need help with, it keeps coming back with the po.171,po174, codes.{lean bank 1 and 2} i have replaced the upper intake orings and the vacum line for the fuel pressure regalator.. i have tryed fuel cleaner spray around the lower inta...
January 30, 2007
1997 Lincoln Continental Spinmaker Edition 4.6L Poor Fuel Economy, MIL Lamp on VIN: 1NLNM97V6V
P0174: Bank 2 Lean. Car runs quite well with the exception of the Mil. I replaced the MAF because it was giving me a Baro PID of 144Hz or about 6000 ft at sea level. The new unit reads 149Hz or about 3330 ft(at sea level). I also replaced the PCV valve as someone else had just do...
January 31, 2007