BMW fault code CDA7
Engine electronics
In the engine electronics, code CDA7 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 error (status, reverse gear, 0x3B0), DME receiver, FRM transmitter
Module versions: Engine electronics (ME9N45), Engine electronics (MEV9N46L), Engine electronics (MSD80N43), Engine electronics (MSD85), Engine electronics (MSS60)
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.
Message error (status, reverse gear, 0x3B0), DME receiver, FRM / LM transmitter
Module versions: Engine electronics (MSD80), Engine electronics (MSV70), Engine electronics (MSV80), 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.
Message error (status, reverse gear, 0x3B0), DME receiver, LM transmitter
Module versions: Engine electronics (ME9N62_2), Engine electronics (MS450DS0), Engine electronics (N62_TUE)
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.
CDKX3B0 - Reverse gear status
Module versions: Engine electronics (ME9E65_6), Engine electronics (MEV9N46)
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.
No message (torque request, steering, 0xB1), DME receiver, AFS transmitter
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 (electrical machine data, 0x32F) incorrect, receiver EME, transmitter EME
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.
DME: Status, reverse gear
Module version: Engine electronics (ME9N62)
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.
No message (torque request, steering, 0xB1), receiver DME, transmitter FRM
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.
Message error (status, reverse gear, 0x3B0), DME receiver, FRM/DSC transmitter
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.
Reading and clearing it
Fault code CDA7 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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