Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Inspection Mode 4
| DTC | Description and trouble part | Note |
|---|---|---|
| B2B03 | Driver's Door Power Window Pulse1 and 2 No Signal | - |
| B2B04 | Driver's Door Power Window Pulse 1 No Signal | - |
| B2B05 | Driver's Door Power Window Pulse 2 No Signal | - |
| B2B06 | Driver's Door Power Window Pulse Direction | - |
| B2B07 | Driver's Door Power Window Position | - |
| B2B08 | Driver's Door Power Window Continuous Reversal | - |
| B2B09 | Driver's Door Power Window Control Module EEPROM | - |
| B2B23 | Passenger's Door Power Window Pulse 1 and 2 No Signal | - |
| B2B24 | Passenger's Door Power Window Pulse 1 No Signal | - |
| B2B25 | Passenger's Door Power Window Pulse 2 No Signal | - |
| B2B26 | Passenger's Door Power Window Pulse Direction | - |
| B2B27 | Passenger's Door Power Window Position | - |
| B2B28 | Passenger's Door Power Window Continuous Reversal | - |
| B2B29 | Passenger's Door Power Window Control Module EEPROM | - |
| B2B50 | POWER WINDOW MAIN SWITCH FAILURE | - |
Diagnostic procedure:
- Using the Subaru Select Monitor, perform the clear memory of [Power Window (Switch)], [Power Window (Driver)] or [Power Window (Passenger)]. Ref. to COMMON (DIAG)>CLEAR MEMORY .
- Using the Subaru Select Monitor, read the [Power Window (Switch)], [Power Window (Driver)] or [Power Window (Passenger)] DTC and check that the concerned DTC is not displayed. Ref. to POWER WINDOW (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .NOTE:
If the DTC is displayed on the screen, the trouble is still present. Perform the diagnosis for the displayed DTCs. After solving the DTC, repeat from step 1 .
- After initial setting of the power window Ref. to GLASS/WINDOW/MIRRORS>POWER WINDOW SYSTEM>OPERATION ., use the power window switch to operate the automatic up/down feature and check that the window works in automatic operation.
- Using the Subaru Select Monitor, read the [Power Window (Switch)], [Power Window (Driver)] or [Power Window (Passenger)] DTC and check that the concerned DTC is not displayed. Ref. to POWER WINDOW (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .
If the DTC is displayed on the screen, the trouble is still present. Perform the diagnosis for the displayed DTCs.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.