BMW fault code CDA2
Engine electronics
In the engine electronics, code CDA2 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 (power management, battery voltage, 0x3B4) incorrect, receiver DME, transmitter CAS/PM
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.
Message (power management, battery voltage, 0x3B4) incorrect, receiver DME, transmitter DME-DDE
Module versions: Engine electronics (MSD80), Engine electronics (MSD85), 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.
Message (power management, battery voltage, 0x3B4) incorrect, receiver DME
Module versions: Engine electronics (ME9N45), 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.
No message (status of convertible soft top, 0x27E), DME receiver, CVM 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 (actual data, KLE, 0x108) 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.
CDKX3B4 - Message monitoring: Power module battery voltage
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.
CDKX3B4 - Power management battery voltage
Module version: Engine electronics (MEV9N46)
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 (soft top convertible status, 0x27E), DME receiver, DME-DDE transmitter
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 (power management, battery voltage, 0x3B4) incorrect, receiver DME, transmitter KGM
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 (power management, battery voltage, 0x3B4) faulty, receiver DME, transmitter CAS/PM
Module version: Engine electronics (MSV70)
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 (power management, battery voltage, 0x3B4), DME receiver, DME-DDE / CAS / PM transmitter
Module version: Engine electronics (N62_TUE2)
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 CDA2 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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