BMW fault code 3049
Engine electronics
In the engine electronics, code 3049 means different things depending on the version of the module in the car. Find your car below; the app shows the right one for yours.
DME: Terminal 15 deactivation, activation
Module versions: Engine electronics (ME17N45), Engine electronics (MEV17N46)
Which BMWs have these versions depends on the engine and equipment, so we don't list them here; AutoLingo for BMW reads which version your car has.
Knock sensor 1, signal: engine noise below limit value or line disconnection
Module versions: Engine electronics (MEVD174K), Engine electronics (MEVD17KW)
Which BMWs have these versions depends on the engine and equipment, so we don't list them here; AutoLingo for BMW reads which version your car has.
Knock sensor, signal: engine noise below limit value or line disconnection
Module version: Engine electronics (MEVD176K)
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.
Knock sensor, signal: Electrical fault KS (loose contact) or KS loose
Module version: Engine electronics (MVD1722)
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 3049 is a BMW code, stored in the car's engine electronics, 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 engine electronics is on: 3 Series (E46), Z8 (E52), X5 (E53), 5 Series (E60), 5 Series (E61), 6 Series (E63), 6 Series (E64), 7 Series (E65), 7 Series (E66), 7 Series (E67), X5 (E70), X6 (E71), X6 (E72), 1 Series (E81), 1 Series (E82), X3 (E83), X1 (E84), Z4 (E85), Z4 (E86), 1 Series (E87), 1 Series (E88), Z4 (E89), 3 Series (E90), 3 Series (E91), 3 Series (E92), 3 Series (E93)
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