Honda Civic manuals

Subaru Legacy Service Manual: Dtc b2311 rear radar detect tcm


Automatic transmission fails.


All functions of BSD/RCTA 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.

AT OIL TEMP light blinks in the combination meter.


Check and replace the side that displayed the DTC.



Check the transmission. Basic Diagnostic Procedure

Is there any fault-

Perform the inspection according to the diagnosis of the transmission.

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2311 REAR RADAR DETECT TCM


1) Restore the vehicle to its original state.

2) Perform the Inspection Mode. Inspection Mode

Is DTC B2311 displayed- (Current malfunction)

Replace the radar sensor. Radar Sensor

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.


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

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