BMW fault code 5F97
Single-axle air suspension
In the single-axle air suspension, code 5F97 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.
EHC: Compressor relay
Module versions: Single-axle air suspension (EHC_70), Single-axle air suspension (EHC_E65)
In: 5 Series (E61) 2004–2010, 7 Series (E65) 2001–2008, 7 Series (E67) 2002–2008, 7 Series (E66) 2002–2008, X5 (E70) 2006–2013, X6 (E71) 2008–2014, X6 (E72) 2009–2011
EHC: Supply, bellows valves, rear
Module version: Double-axle air suspension (EHC2RR)
In: 7 Series (E65) 2001–2008, 7 Series (E66) 2002–2008, 7 Series (E67) 2002–2008
Reading and clearing it
Fault code 5F97 is a BMW code, stored in the car's single-axle air suspension, 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 single-axle air suspension is on: 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)
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