BMW fault code 4A71
Engine electronics
In the engine electronics, code 4A71 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: DDE control module internal (control unit internal)
Module versions: Digital Diesel Electronics (D71N47C0), DDE (d71n47d0) (D71N47D0)
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.
4A71 DDE control unit internal
Module versions: Digital Diesel Electronics (D73N47A0), 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: DDE control module internal
Module version: DDE (d70n47b0) (D70N47B0)
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.
4A71 DDE control unit internal (IVPSplyStopDCDC_0)
Module version: DDE (d73n57b0) (D73N57B0)
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.
4A71 DDE control unit, internal (IVPSplyStopDCDC_0)
Module version: DDE US-diesel fuel (D73N57C0)
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 4A71 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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