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Home >> Infiniti >> 2015 >> QX60 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 11 (Door & Lock (DTC/Circuit Diagnosis) (Except Hybrid)) >> DTC/Circuit Diagnosis >> DTC B2420: Close Switch >> DTC Logic >> DTC Detection Logic

DTC Detection Logic

WARNING: This page is about a different car, the 2016 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
DTC CONSULT display description DTC detecting condition Possible cause
B2420 CLOSE SW Automatic back door control module detects a malfunction of close switch during automatic operation of back door.
  • Entry of foreign materials to back door lock assembly
  • Back door mechanism
  • Automatic back door control module
  • Close switch
  • Harness or connectors
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