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Home >> Subaru >> 2021 >> Ascent Base >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window System (Diagnostics) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC B2B50: Power Window Main Switch Failure

DTC B2B50: Power Window Main Switch Failure

DTC detecting condition: 

When the driver's side AUTO SW, passenger's side manual UP SW, passenger's side manual DOWN SW, passenger's side AUTO SW, rear left manual UP SW, rear left manual DOWN SW, rear right manual UP SW, or rear right manual DOWN SW is ON for 20±1 seconds or longer.

Trouble symptom: 

Switch cannot be turned OFF.

CAUTION: Before performing diagnosis, refer to "CAUTION" in "General Description". Ref. to POWER WINDOW (DIAGNOSTICS)>General Description>CAUTION .
NOTE: Replace the power window main switch when this DTC is detected. Ref. to GLASS/WINDOWS/MIRRORS>POWER WINDOW CONTROL SWITCH .