BMW fault code 0033
Engine electronics
In the engine electronics, code 0033 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.
Shutoff valve activated charcoal filter (AAV)
Module versions: Motor Electronics (MS410DS1), Motor Electronics (MS410DS2), Motor Electronics (MS410DS3), Motor Electronics (MS411DS1), Motor Electronics (MS411DS2)
In: 3 Series (E36) 1990–2000, 3 Series (E46) 1998–2006, 5 Series (E39) 1995–2003, 7 Series (E38) 1994–2001
Misfire detection cylinder 2
Module versions: Motor Electronics (DM5212R5), Motor Electronics (DM5212R6), Motor Electronics (DM528DS3)
In: 5 Series (E39) 1995–2003, 7 Series (E38) 1994–2001, X5 (E53) 1999–2006
Ignition cylinder 8
Module versions: Motor Electronics (DM338DS0), Motor Electronics (DM338DS1)
In: 7 Series (E38) 1994–2001
Misfire detection cylinder 2 OBDII error !!
Module versions: Motor Electronics (DM524DS0), Motor Electronics (DM528DS0)
In: 3 Series (E36) 1990–2000, 5 Series (E39) 1995–2003, 7 Series (E38) 1994–2001, X5 (E53) 1999–2006
DME: Misfire detection, cyl. 5
Module versions: Motor Electronics (ME72KWP0), Motor Electronics (ME72KWP1)
In: 3 Series (E46) 1998–2006, 5 Series (E39) 1995–2003, 7 Series (E38) 1994–2001, X5 (E53) 1999–2006, Z8 (E52) 2000–2003
Ignition coil cylinder 4
Module version: Motor Electronics (BMS43DS0)
In: 3 Series (E36) 1990–2000, 3 Series (E46) 1998–2006
ignition stage 6
Module version: Motor Electronics (BMSS501)
In: 3 Series (E36) 1990–2000
DME: Request, control-module reset
Module version: Motor Electronics (MS430DS0)
In: 3 Series (E36) 1990–2000, 3 Series (E46) 1998–2006, 5 Series (E39) 1998–2003, X3 (E83) 2003–2010, X5 (E53) 1999–2006, Z4 (E85) 2002–2008
DME: Ignition coil, cyl. 6
Module version: Motor Electronics (MSS54DS0)
In: 3 Series (E46) 1998–2006
Reading and clearing it
Fault code 0033 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: 8 Series (E31), 5 Series (E34), 3 Series (E36), Z3 (E36/7), 7 Series (E38), 5 Series (E39), 3 Series (E46), Z8 (E52), X5 (E53), X3 (E83), Z4 (E85), Z4 (E86)
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