BMW fault code 4030
Engine electronics
In the engine electronics, code 4030 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: Exhaust backpressure sensor before particulate filter, signal ($4030 Exhaust temperature sensor before catalytic converter)
Module versions: Digital Diesel Electronics (D60M47A0), Digital Diesel Electronics (D60M57A0), Digital Diesel Electronics (D60M57D0), Digital Diesel Electronics (D62M57A0), Digital Diesel Electronics (D70N47A0), DDE (d70n47b0) (D70N47B0), Digital Diesel Electronics (D71N47A0), Digital Diesel Electronics (D71N47B0), Digital Diesel Electronics (D71N47C0), DDE (d71n47d0) (D71N47D0), 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.
4030 (0545) exhaust gas temperature sensor before catalytic converter, signal
Module versions: Digital Diesel Electronics (D50M47B1), Digital Diesel Electronics (D50M57C0), Digital Diesel Electronics (D50M57E1)
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.
4030 (0545) Exhaust Gas Temperature Sensor Before Catalytic Converter
Module versions: Digital Diesel Electronics (D50M57A0), Digital Diesel Electronics (D50M57A1), Digital Diesel Electronics (D50M57B1)
In: 3 Series (E46) 1998–2006, X3 (E83) 2003–2010, X5 (E53) 1999–2006
DDE: Exhaust backpressure sensor before particulate filter, signal (exhaust gas temperature sensor before catalytic converter)
Module versions: Digital Diesel Electronics (D50M57D0), Digital Diesel Electronics (D50M57E0)
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: Exhaust temperature sensor before catalytic converter, bank 1, signal
Module versions: 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.
4030 Exhaust Gas Temperature Sensor Before Catalytic Converter (nv)
Module version: Digital Diesel Electronics (D50M47A)
In: 3 Series (E46) 1998–2006
4030 Exhaust Gas Temperature Sensor Before Catalytic Converter
Module version: Diesel electronics master (D51MM670)
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.
DDE: Exhaust-gas temperature sensor, signal
Module version: Digital Diesel Electronics (D60PSA0)
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.
DDE: Exhaust backpressure sensor before particulate filter, signal
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.
4030 (0) Exhaust Gas Temperature Sensor Before Catalytic Converter (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 4030 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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