BMW fault code CDB9
Engine electronics
In the engine electronics, code CDB9 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.
Message (status EMF, 0x201) incorrect, receiver DME, transmitter EMF
Module versions: Engine electronics (MSD80), Engine electronics (MSD85), Engine electronics (MSD85Y), Engine electronics (MSV80)
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.
PT-CAN, message (door sensor status secured BN2000, 0x1E1): checksum incorrect
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.
PT-CAN2: message (status of interface, KLE, 0x3B4) incorrect, receiver EME, transmitter KLE
Module version: Engine electronics (EDME82)
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.
PT-CAN, message (door sensors secured status BN2000, 0x1E1): Checksum error
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.
Message 0x195 (operation of MSA button)
Module version: Engine electronics (MSS60)
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 CDB9 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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