BMW fault code CD8B
Engine electronics
In the engine electronics, code CD8B 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.
CD8B (3202) CAN Bus B
Module versions: Digital Diesel Electronics (D50M47B1), Digital Diesel Electronics (D50M57A1), Digital Diesel Electronics (D50M57B1), Digital Diesel Electronics (D50M57C0), Digital Diesel Electronics (D50M57D0), Digital Diesel Electronics (D50M57E0), Digital Diesel Electronics (D50M57E1)
In: 3 Series (E46) 1998–2006, X3 (E83) 2003–2010, X5 (E53) 1999–2006
DME: Local-CAN communication fault
Module versions: Engine electronics (ME9N62_2), Engine electronics (MSD80), Engine electronics (MSV70), Engine electronics (MSV80), Engine electronics (N62_TUE), Engine electronics (N62_TUE2)
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.
CDKCANB - Local CAN Bus Off
Module versions: Engine electronics (ME9N45), Engine electronics (ME9N62), Engine electronics, cylinder bank 1 (N73_R0)
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.
DME: Bus Off idle actuator/SMG-CAN
Module versions: Engine electronics (MS_S65_2), Engine electronics (MS_S65_3)
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.
DME: Local Controller Area Network communication fault
Module versions: Engine electronics (MEV9N46), Engine electronics (MEV9N46L)
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 (EMF actuation request, 0x1A7): checksum incorrect
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.
DDE: PT CAN bus communication fault
Module versions: Digital Diesel Electronics (D50M57A0), Diesel electronics master (D51MM670)
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.
Powertrain CAN: message (charge of high-voltage battery, 0x340) incorrect, receiver EME, transmitter CIC
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.
CD8B private CAN bus (Master)
Module version: Diesel electronics master (D63MM670)
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.
CD8B private CAN bus
Module version: Digital Diesel Electronics (D60PSA0)
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: Local CAN communication fault)
Module version: Engine electronics (MSS70)
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 (control request EMF, 1A7): checksum incorrect, receiver DME, transmitter DSC
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.
CD8B Local-CAN communication error
Module version: Engine electronics (MS450DS0)
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: Bus Off idle actuator /SMG-CAN
Module version: Engine electronics (MS_S65)
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.
Local-CAN communication error
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.
Local Controller Area Network communication fault
Module version: Engine electronics (MSD85)
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.
Local CAN communication fault
Module version: Engine electronics (MSD85Y)
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: Bus Off idel-controller CAN
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.
DME: Local CAN bus Off
Module version: Engine electronics (ME9E65_6)
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: Local-CAN communication fault (local-CAN)
Module version: Engine electronics, cylinder bank 1 (N73TU_R0)
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 CD8B 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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