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system to lean bank one 02 sensor ?
Trouble code P0171 means:System too lean (bank 1)
Code P0171 means System to lean (bank 1)
PO171 = system adaptive fuel too lean (bank 1) PO174 = system adaptive fuel too lean (bank 2)
Trouble code P0171 means: System Too Lean (Bank 1)
po171--- system to lean (bank # 1)
P0171 System too Lean (Bank 1)
Could be as simple as a vacuum leak on bank 1.
Fuel injection system, fuel trim to lean (bank 1)
Not much info to go on but you could have a large vacuum leak in bank one.
Trouble code P0171 Means: System too lean (bank 1)
System to lean (bank 1). There is a good chance you have a vacuum leak under the hood.