P0171BŚredni
Mieszanka zbyt uboga — DME (BMW)
Układ napędowy
Sprawdź szczegóły →P0174B
ŚredniSystem Too Lean — Bank 2 (BMW CCV)
OBD-II (EN): Fuel Trim System Too Lean Bank 2
Code P0174B — System Too Lean — Bank 2 (BMW CCV). Symptoms: rough engine running (mainly cylinders 4-6 in R6). Possible cause: intake system leak bank 2. Professional diagnosis recommended.
Symptoms
Rough engine running (mainly cylinders 4-6 in R6), jerking
Possible causes
Intake system leak bank 2, faulty MAF sensor, faulty injector gaskets cyl. 4-6, faulty CCV (Crankcase Vent Valve) — common issue N52/N54
Affected systems
Silnik spalinowyUkład dolotowyUkład paliwowy
Related codes
Universal version
This code has a universal OBD-II form:
P0174Zbyt uboga mieszanka — Bank 2Code P0174B appears in these brands
Go to messages and symptoms for your brand — there we analyze this code together with other typical alerts.
Does code P0174B require professional diagnostics?
The code alone is not enough. To find the cause, you need to read live data, check freeze frame conditions, and compare with vehicle behavior. Book a diagnostic session.