BMW fault code 271E
Diesel electronics slave
DME2: Oxygen-sensor heater behind cat. conv., bank 2
Module version: Engine electronics, cylinder bank 2 (N73_L0)
Which BMWs have this version depends on the engine and equipment, so we don't list them here; AutoLingo for BMW reads which version your car has.
Reading and clearing it
Fault code 271E is a BMW code, stored in the car's diesel electronics slave, not a generic OBD2 code (P0xxx): a generic OBD2 reader only reaches the engine's emissions faults, so it won't show it. AutoLingo for BMW reads it with BMW's own diagnostic protocols, in plain English, with the details the module stored about it, and clears it after a repair. If a fault comes right back after it's cleared, the problem is still there.
The diesel electronics slave is on: 7 Series (E65), 7 Series (E66), 7 Series (E67)
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