P0171Średni
Zbyt uboga mieszanka — Bank 1
Układ napędowy
Sprawdź szczegóły →P2187
ŚredniSystem too lean at idle — bank 1 (BMW)
OBD-II (EN): System Too Lean at Idle (Bank 1)
Code P2187 — System too lean at idle — bank 1 (BMW). Symptoms: unstable idle. Possible cause: vacuum leak (intake manifold gaskets). Professional diagnosis recommended.
Symptoms
Unstable idle, fluctuations, check engine light
Possible causes
Vacuum leak (intake manifold gaskets, vacuum hoses), damaged CCV sensor (crankcase ventilation)
Affected systems
Silnik spalinowyUkład paliwowy
Related codes
Code P2187 appears in these brands
Go to messages and symptoms for your brand — there we analyze this code together with other typical alerts.
Does code P2187 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.