BMW fault code 0077

Electronic engine power control

Electronic engine power control: Fault upon acknowledgement of idling Digital Motor Electronics, right, via CAN bus

Module version: Electronic engine power control (EML3)

In: 7 Series (E38) 1994–2001

Reading and clearing it

Fault code 0077 is a BMW code, stored in the car's electronic engine power control, 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 electronic engine power control is on: 8 Series (E31), 7 Series (E32), 7 Series (E38)

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