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P0171 Diagnostic Trouble Code Discussion for March 2018

Fuel System Lean (Bank 1)

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Trouble Ticket Help Requests for DTC P0171
Help Request Posted
2001 Nissan Sentra GXE 1.8L Poor Idle Quality VIN: 3N1CB51D01
P0171: Fuel Trim Lean (Bank 1). Seems simple enough, a 1.8l nissan lean @ idle. Smoked engine for vacuum leaks, (4 times) none found. B1s1 hangs around 0.1 b1s2 0.3. B2s1 switching ok. 1500 rpms b1s1 switching normal. Add propane through intake b1s1 responds normaly. Spray carb cleaner a...
March 22, 2018
1999 Toyota Avalon XL 3.0L Misfire, MIL Lamp on VIN: 4T1BF18B4X
P0171: Fuel System Too Lean (Bank 1). Car came to us from another shop they replaced egr, maf , and also did a timing belt. We took covers off to confirm timing is on. Compression at about 165 appreciate any help!!
March 26, 2018
2006 Chrysler PT Cruiser GT 2.4L MIL Lamp on VIN: 3C3HY75S26
P0171: Fuel System Lean. Please help, out of ideas @ this point! o2 sensors are switching normal. Smoke tested intake found no leaks. Disconnected evap , pcv and power brake booster to isolate, fuel trims long and short did not change. Car runs and drives smooth with no power loss...
March 28, 2018
2004 Chrysler Crossfire 3.2L MIL Lamp on VIN: 1C3AN69LX4
P0171: Fuel System Rich Control Over Limit At Idle (Bank 1). Hi guys, I've been chasing my tail on this one, this car has a lean condition the long fuel trim is always high +20 and up for both banks, the short fuel trim is always close to cero, even when I reset the check engine light to start from cero the long fuel tr...
March 30, 2018