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 8
| DTC | Description & trouble part | Note |
|---|---|---|
| B1017 | COLLISION DETECTION SIGNAL INPUT | - |
| B1107 | CAN COMMUNICATION (BIU) STUCK | - |
| B1402 | IMMOBILIZER KEY COLLATION | Model without keyless access with push button start system |
| B1403 | IMMOBILIZER SUB CONTROL MODULE COLLATION | Model without keyless access with push button start system |
| B1404 | IMMOBILIZER SUB CONTROL MODULE COMMUNICATION | Model without keyless access with push button start system |
| B140A | IMMOBILIZER SUB CONTROL MODULE NON-VOLATILE MEMORY | Model without keyless access with push button start system |
| B1410 | TRANSPONDER COMMUNICATION | Model without keyless access with push button start system |
| B1411 | IMMOBILIZER ANTENNA | Model without keyless access with push button start system |
| U0073 | CONTROL MODULE COMMUNICATION BUS OFF | - |
| U0074 | CONTROL MODULE COMMUNICATION BUS "BODY-CAN" OFF | - |
| U0100 | LOST COMMUNICATION WITH ECM/PCM "A" | - |
| U0122 | LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULE | - |
| U0127 | LOST COMMUNICATION WITH TIRE PRESSURE MONITOR CONTROL MODULE AND/OR KEYLESS ENTRY CONTROL MODULE | Model without keyless access with push button start system |
| U0155 | LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE | - |
| U0167 | LOST COMMUNICATION WITH IMMOBILIZER CONTROL MODULE | Model with immobilizer control module |
| U0327 | SOFTWARE INCOMPATIBILITY WITH VEHICLE SECURITY CONTROL MODULE | Model with keyless access with push button start system |
| U0401 | INVALID DATA RECEIVED FROM ECM/PCM "A" | - |
| U0416 | INVALID DATA RECEIVED FROM VEHICLE DYNAMICS CONTROL MODULE | - |
| U0423 | INVALID DATA RECEIVED FROM INSTRUMENT PANEL CLUSTER CONTROL MODULE | - |
| U0426 | INVALID DATA RECEIVED FROM IMMOBILIZER CONTROL MODULE | Model with immobilizer control module |
| U0427 | INVALID DATA RECEIVED FROM VEHICLE SECURITY CONTROL MODULE | Model with keyless access with push button start system |
| U0430 | INVALID DATA RECEIVED FROM TIRE PRESSURE MONITOR CONTROL MODULE AND/OR KEYLESS ENTRY CONTROL MODULE | Model without keyless access with push button start system |
Diagnostic procedure:
- Using the Subaru Select Monitor, perform the clear memory of [Body Control]. Ref. to COMMON (DIAGNOSTICS)>CLEAR MEMORY
- Using the Subaru Select Monitor, read the DTC of [Body Control] to check that there is no DTC displayed. Ref. to BODY CONTROL (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 .
- Turn the ignition switch OFF → ON, and wait for 10 seconds or more.
- Using the Subaru Select Monitor, read the DTC of [Body Control] to check that there is no DTC displayed. Ref. to BODY CONTROL (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.
Use the Manual With the Right Hardware
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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.