P0171 Diagnostic Trouble Code Discussion for January 2018
Fuel System Lean (Bank 1)
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| Help Request | Posted | |
| 2004 Ford F-150 FX4 5.4L MIL Lamp on VIN: 1FTPW14554 P0171: Lean Exhaust bank one. I'm about five weeks in on this one. The fact that the customer isn't foaming at the mouth must mean that this truck has been around and NOT fixed, elsewhere. The customer complains of check engine light on, not a driveability problem. I've driven the truc... |
January 08, 2018 | |
| 2004 Ford F-150 FX4 5.4L MIL Lamp on VIN: 1FTPW14554 P0171: Lean Exhaust bank one. I'm about five weeks in on this one. The fact that the customer isn't foaming at the mouth must mean that this truck has been around and NOT fixed, elsewhere. The customer complains of check engine light on, not a driveability problem. I've driven the truc... |
January 09, 2018 | |
| 2011 Honda Pilot EX-L 3.5L MIL Lamp on VIN: 5FNYF3H68B ... Customer brought this 2011 Honda Pilot in complaining of intermittent jerking at cruising speed. The said it did not do it on way to shop) Gave it extensive test drive and could not duplicate problem. Scanned with Autel Maxisys Elite and found no code... |
January 10, 2018 | |
| 2006 Aston Martin DB9 Volante 6.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: SCFAD02A96 P0171: EMS-P System too lean bank 1. Noticed long term fuel trim on B1 is pegged at +25 and does not move. Engine misfires at cold start. Engine misfires at very heavy load/ WOT |
January 24, 2018 | |
| 2011 Chevrolet Cruze LT 1.4L MIL Lamp on VIN: 1G1PF5S92B P0171: lean bank 1. We have this lean code which is present relatively quick. Long term trim graduates within 2 minutes after resetting fuel trim. Short trim is also lean but does try to go rich but doesn't. I smoked this and found only small leak past intake so we replaced the s... |
January 25, 2018 | |
| 2006 Aston Martin DB9 Volante 6.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: SCFAD02A96 P0171: EMS-P System too lean bank 1. Noticed long term fuel trim on B1 is pegged at +25 and does not move. Engine misfires at cold start. Engine misfires at very heavy load/ WOT |
January 26, 2018 | |
| 2005 BMW X3 2.5i 2.5L MIL Lamp on VIN: WBXPA73465 P0171: Bank 1 lean. Vehicle will intermidently set a code P171 & 174 While driving, Both banks set at the same time, Fuel pressure and volume are within spec at idle or while driving, We have smoke tested the intake system several times, No leaks present, Air filter and i... |
January 29, 2018 | |
| 2006 Land Rover Range Rover HSE 4.4L MIL Lamp on VIN: SALME15456 P0171: Fuel system too lean Bank 1. Vehicle came in running ok, P0171 & P0174 fuel trim too lean, Fuel trims are at 25% when adaptations are reset. Smoke tested intake manifold & crankcase for leaks, no external leaks, checked crankcase pressure 7 millibar. Checked fuel pressure 60 p... |
January 31, 2018 |
