P1415 BMW - p0174 p0171 p0175 p0172

Question

7

-------all of these are on

Answer 1

P1415 MAF (mass air flow) too low

P0174 Fuel trim too lean Bank 2

P0175 Fuel trim too rich Bank 2

P0171 Fuel trim too lean Bank 1

P0172 Fuel trim too rich Bank 1

P1415 codes when the airflow is to low, and this code condition does not include the EVAP purge system. , a visual inspection is need , check vacuum leaks like a brake booster hose. induction leak such as the crankcase,the oil drainback hose, these are just example that should be inspected. a exhaust that partially plugged can also set P1415.

 Here the MAF airflow air duct, a inspection here for any open or tear or disconnection. or plugged air filter. P1415 represent low air flow going into the engine,

 Oil level is important . oil level that has  too much oil can cause this code, and also a missing oil dipstick, which would cause a vacuum leak in the crankcase.

 The oil fill cap, can not be missing, this would cause a P1415, missing oil cap would affect the air induction.