P1674

DTC P1674
Immobilizer - incorrect code Drive cycle A:Signal out of range - above maximum.

Possible cause:
^ Motronic ECM not programmed with the correct code.

Motronic ECM Not Programmed With The Correct Code.
CHECK THE FOLLOWING:
^ BCU or Motronic ECM has been replaced.
POSSIBLE FAULTS
^ BCU has been renewed.
^ Motronic ECM has been renewed.
^ BCU has been put into diagnostic mode for testing.
DIAGNOSTIC HINTS
^ If TestBook available, run security test on SUB-SYSTEM TEST menu.