B1650 – PCM Or Airbag Control Module Has Detected A Malfunction In The Occupant Classification System

Meaning:

When the PCM or airbag control module has detected a malfunction in the occupant classification system, the B1650 happens
The B1650 is triggered when the PCM or airbag control module has detected a malfunction in the occupant classification system

The PCM or airbag control module has detected a malfunction in the occupant classification system.

Main Symptoms:

Possible Causes:

  • Problem in the occupant classification system
  • Wiring problem in the right front seat
  • Problem with airbag sensor assembly center

Diagnostic Steps:

  • Visually inspect all wiring in the occupant classification system for loose, open or short connections
  • Perform resistance test on occupant classification system and airbag sensor assembly center and replace as necessary
  • Perform resistance test on airbag control module. If it doesn’t pass the test replace the module

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