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OBD II Fault Code

  • OBD II P0644

OBD-II Code Instrument cluster may not operate normally is defined as a Driver Display Serial Communication Circuit

The Driver Display (or Instrument Cluster) is networked to other control modules on the vehicle. If the Instrument Cluster cannot communicate with the other modules, code P0644 will set.

Instrument cluster may not operate normally Symptoms

  • Instrument cluster may not operate normally

Common Problems That Trigger the P0644 Code

  • Control module failure
  • Instrument cluster failure
  • Wiring issue
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