DTC B2344: Radar ASSY B&S Vehicle Code Abnormal

DTC detecting condition: 

• A radar sensor with an incorrect part No. is installed.
• Defective combination meter

Trouble symptom: 

• All functions of SRVD stop.
• Fail icon is displayed in the combination meter LCD display.
• Failure-related notification is displayed for approx. two seconds on LCD display in the combination meter.
  NOTE: Check and replace the side that displayed the DTC.

1. CHECK DTC  .
   1. Turn the ignition switch to ON.
   2. Using the Subaru Select Monitor, read the DTCs of [Blind Spot Detection/Rear Cross Traffic Alert(RH)] or [Blind Spot Detection/Rear Cross Traffic Alert(LH)]. Ref. to BLIND SPOT DETECTION/REAR CROSS TRAFFIC ALERT (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .
      • Blind Spot Detection/Rear Cross Traffic Alert(RH)
      • Blind Spot Detection/Rear Cross Traffic Alert(LH)

      Is DTC B2327 displayed? (Current malfunction)

      Yes  : Perform the diagnosis of DTC B2327. Ref. to BLIND SPOT DETECTION/REAR CROSS TRAFFIC ALERT (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B2327: REAR RADAR INTERNAL FAILURE (INTERNAL ELECTRIC CIRCUIT) .

      No  : Go to  2 .

2. CHECK DTC  .

   Using the Subaru Select Monitor, read the DTCs of [Blind Spot Detection/Rear Cross Traffic Alert(RH)] or [Blind Spot Detection/Rear Cross Traffic Alert(LH)]. Ref. to BLIND SPOT DETECTION/REAR CROSS TRAFFIC ALERT (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .

   • Blind Spot Detection/Rear Cross Traffic Alert(RH)
   • Blind Spot Detection/Rear Cross Traffic Alert(LH)

   Is DTC B2344 displayed? (Current malfunction)

   Yes  : Go to  3 .

   No  : Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

   NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.
3. CHECK RADAR SENSOR PART NO  .

   Check the part number of the radar sensor. Or, using the Subaru Select Monitor, select [Work Support] on the [Select Function] display of [Blind Spot Detection/Rear Cross Traffic Alert(RH)] or [Blind Spot Detection/Rear Cross Traffic Alert(LH)], and check [ECU Parts Number].

   Is the part No. of radar sensor or ECM part number displayed on Subaru Select Monitor the part No. set for the target vehicle?

   Yes  : Go to  4 .

   No  : Replace with a radar sensor with the part No. set for the target vehicle Ref. to BLIND SPOT DETECTION/REAR CROSS TRAFFIC ALERT>RADAR SENSOR .

4. CHECK COMBINATION METER  .

   Check the combination meter. Ref. to COMBINATION METER (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE .

   Is the check result OK?

   Yes  : Go to  5 .

   No  : Perform the inspection according to the diagnosis for combination meter.

5. CHECK SRVD  .
   1. Restore the vehicle to its original state.
   2. Perform the inspection mode Ref. to BLIND SPOT DETECTION/REAR CROSS TRAFFIC ALERT (DIAGNOSTICS)>INSPECTION MODE .

      Is DTC B2344 displayed? (Current malfunction)

      Yes  : Replace the radar sensor. Ref. to BLIND SPOT DETECTION/REAR CROSS TRAFFIC ALERT>RADAR SENSOR .

      No  : Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

      NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.