BMW fault code D021

Longitudinal dynamics management

In the longitudinal dynamics management, code D021 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.

Message error (engine control, 0x0AA), receiver ICM, transmitter DME-DDE

Module version: Integrated chassis management (ICM_71)

In: X5 (E70) 2006–2013, X6 (E71) 2008–2014

LDM: insignificant fault Delete fault code (message Wheel torque request drivetrain ID BFh)

Module version: Longitudinal dynamics management (LDM_60)

In: 5 Series (E60) 2003–2010, 5 Series (E61) 2004–2010, 6 Series (E63) 2003–2010, 6 Series (E64) 2004–2010

Message error (ACC, 0x159), receiver LDM, transmitter ACC

Module version: Longitudinal dynamics management (LDM_90)

In: 3 Series (E91) 2005–2012, 3 Series (E90) 2005–2012, 3 Series (E92) 2006–2013, 3 Series (E93) 2007–2013

Reading and clearing it

Fault code D021 is a BMW code, stored in the car's longitudinal dynamics management, 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 longitudinal dynamics management is on: 5 Series (E60), 5 Series (E61), 6 Series (E63), 6 Series (E64), X5 (E70), X6 (E71), X6 (E72), X1 (E84), 3 Series (E90), 3 Series (E91), 3 Series (E92), 3 Series (E93)

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