BMW 320i: Common Problems, Fault Codes & Repairs Everything for the BMW 320i in one place — its common problems and reliability, the fault codes owners see most, and the tools to diagnose them. BMW 320i fault codes BMW 320i P0171 BMW 320i specs & capacities BMW 320i — Fuse box location & guideBMW 320i — Oil capacity & typeBMW 320i — Tire pressureBMW 320i — Bolt pattern & wheel sizes Recommended tools Automotive MultimeterCompression TesterBattery & Charging System Tester Read your code: OBD-II scanners →