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Home >> Lexus >> 2011 >> IS F >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Multiplex Communication System (Diagnostics Codes) >> Multiplex Communication System >> DTC B1280: Left Side Junction Block ECU Communication Stop >> Description

DTC B1280: Left Side Junction Block ECU Communication Stop: Description

This DTC is detected if communication between the main body ECU LH (cowl side junction block LH) and gateway ECU stops for more than 10 seconds.

DTC No. DTC Detection Condition Trouble Area
B1280 Main body ECU LH (cowl side junction block LH) ECU communication stops
  • Main body ECU LH (cowl side junction block LH)
  • Wire harness or connector
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