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14 D error code dash display

14K views 3 replies 3 participants last post by  Planethill  
#1 ·
Good evening fellow members.2001 Ml320 has been running fine other than it needing new cats. Every time u start up ml on odometer display it will show a number and the letter D. Has anyone ever came across this? Any idea what it means? It now reads 14 D.
Julio
 

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