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P0171 Diagnostic Trouble Code Discussion for July 2019

Fuel System Lean (Bank 1)


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Trouble Ticket Help Requests for DTC P0171
Help Request Posted
2011 Land Rover Range Rover Sport HSE 5.0L MIL Lamp on VIN: SALSH2E47B
P0171: bank 1 lean. This rover is driving us nuts! Lean condition codes under idle only. Yes, it sounds like a simple vacuum leak. We have smoke tested this engine 4 times for leaks and cannot find anything. Weve pulled the charger and intake looking and still cannot find any...
July 01, 2019
2011 Land Rover Range Rover Sport HSE 5.0L MIL Lamp on VIN: SALSH2E47B
P0171: bank 1 lean. This rover is driving us nuts! Lean condition codes under idle only. Yes, it sounds like a simple vacuum leak. We have smoke tested this engine 4 times for leaks and cannot find anything. Weve pulled the charger and intake looking and still cannot find any...
July 05, 2019
2011 Subaru Forester X Premium 2.5L MIL Lamp on VIN: JF2SHADC9B
P0171: Lean. The vehicle runs & drives as it should. no misfire, no poor idle, drives at 65 to 70 with no effort. car computer claims 21 MPG. check engine light comes on within 40 miles of driving it doesn't appear to make a difference if you drive slow,fast or in ...
July 06, 2019
2006 Volkswagen Beetle 2.5 2.5L Poor Idle Quality, Stall, Misfire VIN: 3VWPW31C86
P0171: Lean upper limit reached. Vehicle will run terrible after awhile, when it is running good we remove oil cap and it runs bad with lots of crankcase vacuum . When hose removed and plugged off at valve cover there is no crankcase vacuum and seems to run good. What is normal crankcase ...
July 10, 2019
2009 Volkswagen Eos Komfort 2.0L MIL Lamp on VIN: WVWAA71F39
P0171: fuel trimbank 1system too lean. ... engine light and they replaced the dipstick o-ring and told the owner he needed a rear main seal to resolve the p0507 idle control system rpm higher than expected & p0171 fuel trim;bank 1:system too lean codes. I ...
July 13, 2019