BMW fault code CDB6
Engine electronics
In the engine electronics, code CDB6 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.
PT-CAN, message (steering torque request, 0xB1): loss torque too large
Module versions: Engine electronics (MEVD174K), Engine electronics (MEVD176K)
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 high-voltage battery 1, 0x1AF) incorrect, receiver EME, transmitter SME
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.
Message error (torque request, steering, 0xB1), DME receiver, DSC transmitter (PT-CAN message steering torque request loss torque too large)
Module version: Engine electronics (MEVD17KW)
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.
DME: Message (operation, button MSA, 195)
Module version: Engine electronics (MSD80N43)
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 0x2FC (central locking system and lid status reception)
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 CDB6 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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