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Discussion Starter #1 (Edited)
I just changed timing chain on 2013 BMW 328I 2.0 liter N26. Car cracks but doesn't start . Permanent code PO52B... Any idea here what's going on ?! Thanks for your help!
 

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To OP, the issue is likely that the DME getting mod'ed, and now the EWS(immobilizer) is out-of-sync with the DME's ISN(serial number).

There should be diag tools that can re-sync EWS and DME.
 
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