E90/E91/E92/E93 (2006 - 2013)
so i searched all over here and never found the exact answer to my issue with all 4 o2 sensors reading bad. in the e box on the passenger side engine compartment i had fuse ef4 blowing every time i turned the key to run. people said it was most likely a short in one of the o2 sensor wires. i...