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DTC P1636: Inductive Signature Chip Communication Error

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DTC P1636: INDUCTIVE SIGNATURE CHIP COMMUNICATION ERROR

Description:  Indicates the powertrain control module (PCM) has lost communication with the inductive signature chip.
Possible Causes: 
  • Damaged PCM
Diagnostic Aids:  DTC P1636 indicates the PCM has lost communication with the inductive signature chip. Install a new PCM. Refer to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) .
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All Refer to the Description, Possible Causes and Diagnostic Aids for the appropriate DTC.
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