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Home >> Ford >> 2013 >> Focus ST >> Repair and Diagnosis >> External Pages >> Different car >> Section 711 (Engine Controls (Except Diesel & Hybrid) - Powertrain DTC Descriptions - DTC P0571 - P1674) >> DTC P064D: Internal Control Module O2 Sensor Processor Performance - Bank 1

DTC P064D: Internal Control Module O2 Sensor Processor Performance - Bank 1

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P064D - INTERNAL CONTROL MODULE O2 SENSOR PROCESSOR PERFORMANCE - BANK 1

Description:  The PCM monitors the application-specific integrated circuit that controls and monitors the heated oxygen sensor (HO2S). The test fails when the PCM detects an internal circuit or communication concern.
Possible Causes: 
  • Damaged PCM
Diagnostic Aids:  Internal PCM concern.
Reprogram or update the calibration. Check for other DTCs and diagnose those first. Check for aftermarket performance products before installing a new PCM. Clear the DTCs, repeat the self-test. If the DTC is retrieved again, install a new PCM. Refer to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) , Programming the VID Block for a Replacement PCM.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All Refer to the Description, Possible Causes and Diagnostic Aids for the DTC.