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Home >> Toyota >> 2017 >> Prius Three Touring >> Repair and Diagnosis >> External Pages >> Different car >> Section 16 (Lighting System (W/ AFS) - Diagnostic Codes & Circuit Tests) >> LIGHTING SYSTEM (w/ AFS) >> DTC B242C: Right Headlight ECU Malfunction; DTC B242D: Left Headlight ECU Malfunction [12/2018 -] >> Description

DTC B242C: Right Headlight ECU Malfunction; DTC B242D: Left Headlight ECU Malfunction [12/2018 -]: Description

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These DTCs are stored if the No. 1 headlight ECU sub-assembly LH or RH detects an internal malfunction. The No. 1 headlight ECU sub-assembly LH stores DTC B242C and B242D.

DTC No. Detection Item DTC Detection Condition Trouble Area Note
B242C Right Headlight ECU Malfunction An internal malfunction occurs in the No. 1 headlight ECU sub-assembly RH No. 1 headlight ECU sub-assembly RH -
B242D Left Headlight ECU Malfunction An internal malfunction occurs in the No. 1 headlight ECU sub-assembly LH No. 1 headlight ECU sub-assembly LH -