BMW fault code 2A05
Engine electronics
In the engine electronics, code 2A05 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.
CDKSLV2 - Secondary air valve Bank2
Module versions: Engine electronics (ME9N45), 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.
Injector, cylinder 2, activation: Low-voltage side; short circuit to ground
Module versions: Engine electronics (MEVD174K), Engine electronics (MEVD176K), 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.
CDKSLV2 2A05 - Secondary air valve 2, mechanical
Module version: Engine electronics (ME9N62_2)
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.
Injection system, cylinder 2, activation: Low voltage side; short circuit to GRD
Module version: Engine electronics (MVD1722)
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.
CDKSLV2 - Secondary air valve 2, mechanical
Module version: Engine electronics (N62_TUE)
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 2A05 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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