BMW fault code 43A3
Engine electronics
In the engine electronics, code 43A3 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.
DDE: Start enable to CAS, activation
Module versions: Digital Diesel Electronics (D60M47A0), Digital Diesel Electronics (D70N47A0), DDE (d70n47b0) (D70N47B0), Digital Diesel Electronics (D71N47A0), Digital Diesel Electronics (D71N47B0), Digital Diesel Electronics (D71N47C0), DDE (d71n47d0) (D71N47D0), DDE (d73n57b0) (D73N57B0), DDE US-diesel fuel (D73N57C0)
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: Starter interlock relay, activation
Module versions: Digital Diesel Electronics (D50M47B1), Digital Diesel Electronics (D50M57D0), Digital Diesel Electronics (D50M57E0), Digital Diesel Electronics (D50M57E1), Digital Diesel Electronics (D62M57B0), Diesel electronics master (D63MM670)
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.
43A3 Start enable for CAS, activation
Module versions: Digital Diesel Electronics (D60M57A0), Digital Diesel Electronics (D60M57D0), Digital Diesel Electronics (D62M57A0), Digital Diesel Electronics (D72N47B0), Digital Diesel Electronics (D73N57D0)
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: Start-locking relay
Module versions: Digital Diesel Electronics (D50M57A0), Digital Diesel Electronics (D50M57B1), Diesel electronics master (D51MM670)
In: 3 Series (E46) 1998–2006, X3 (E83) 2003–2010, X5 (E53) 1999–2006
43A3 starter lock relay
Module versions: Digital Diesel Electronics (D50M47A), Digital Diesel Electronics (D50M57A1)
In: 3 Series (E46) 1998–2006, X5 (E53) 1999–2006
43A3 Starter disable relay, control
Module version: Digital Diesel Electronics (D50M57C0)
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.
43A3 Start enable line to CAS, activation:
Module version: Digital Diesel Electronics (D73N47A0)
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.
43A3 (0) Error path for the starter relay actuator (nv)
Module version: Digital Diesel Electronics (DDE50K47)
In: 3 Series (E46) 1998–2006, X5 (E53) 1999–2006, Z8 (E52) 2000–2003
Reading and clearing it
Fault code 43A3 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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