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P0606 - Control Module Processor

WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
P0606 - CONTROL MODULE PROCESSOR

Description:  This DTC indicates a register readback (powertrain control module (PCM) internal communications) error.
Possible Causes: 
  • Hybrid-Electric System
  • Damaged PCM
Diagnostic Aids:  An internal PCM concern, or a system failure mode effects management (FMEM) condition exists. Repairing the other DTCs can fix this DTC.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All   refer to PINPOINT TEST QE .
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