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 DETECTION CONDITION CHART

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