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.
2017 Subaru Outback 2.5iFACTORY OEM SERVICE PROCEDURE
Infotainment System DTCS
INFOTAINMENT SYSTEM DIAGNOSTIC TROUBLE CODE IDENTIFICATION
| DTC | Item | Note |
|---|---|---|
| B2240 | CAN COMMUNICATION (AUDIO) STUCK | Ref. to DTC B2240 CAN COMMUNICATION (AUDIO) STUCK , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| B2241 | CAN COMMUNICATION | Ref. to DTC B2241 CAN COMMUNICATION , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| B2242 | UART COMMUNICATION | Ref. to DTC B2242 UART COMMUNICATION , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| B2243 | SD CARD COMMUNICATION | Ref. to DTC B2243 SD CARD COMMUNICATION , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| B2244 | AMPLIFIER COMMUNICATION | Ref. to DTC B2244 AMPLIFIER COMMUNICATION , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| B2247 | CD MECHANICAL | Ref. to DTC B2247 CD MECHANICAL , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| B2249 | BLUETOOTH MODULE | Ref. to DTC B2249 BLUETOOTH MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| B224A | BACKUP CAMERA | Ref. to DTC B224A BACKUP CAMERA , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| U0074 | CONTROL MODULE COMMUNICATION BUS "BODY-CAN" OFF | Ref. to DTC U0074 CONTROL MODULE COMMUNICATION BUS "BODY-CAN" OFF , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| U0100 | LOST COMMUNICATION WITH ECM/PCM "A" | Ref. to DTC U0100 LOST COMMUNICATION WITH ECM/PCM "A" , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| U0101 | LOST COMMUNICATION WITH TCM | Ref. to DTC U0101 LOST COMMUNICATION WITH TCM , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| U0122 | LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULE | Ref. to DTC U0122 LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| U0128 | LOST COMMUNICATION WITH PARK BRAKE CONTROL MODULE | Ref. to DTC U0128 LOST COMMUNICATION WITH PARK BRAKE CONTROL MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| U0155 | LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE | Ref. to DTC U0155 LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| U0164 | LOST COMMUNICATION WITH HVAC CONTROL MODULE | Ref. to DTC U0164 LOST COMMUNICATION WITH HVAC CONTROL MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| U0167 | LOST COMMUNICATION WITH IMMOBILIZER CONTROL MODULE | Ref. to DTC U0167 LOST COMMUNICATION WITH IMMOBILIZER CONTROL MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| U0327 | SOFTWARE INCOMPATIBILITY WITH VEHICLE SECURITY CONTROL MODULE | Ref. to DTC U0327 SOFTWARE INCOMPATIBILITY WITH VEHICLE SECURITY CONTROL MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| U1140 | LOST COMMUNICATION WITH BODY CONTROL MODULE BODY-CAN | Ref. to DTC U1140 LOST COMMUNICATION WITH BODY CONTROL MODULE BODY-CAN , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
| U1232 | LOST COMMUNICATION WITH REAR/SIDE RADAR CONTROL MODULE | Ref. to DTC U1232 LOST COMMUNICATION WITH REAR/SIDE RADAR CONTROL MODULE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). |
Factory Service Tools
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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.
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