DTC B1957 Acura
Rear MICU Lost Communication with Combination Switch Control Unit (HLSW Message)
Rear MICU Lost Communication with Combination Switch Control Unit (HLSW Message)
Description
Poor communication between the rear MICU and the Combination Switch Control Unit. Poor communication between the rear MICU and the Combination Switch Control Unit. NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A. If DTCs B1007, B1062, B1063, B1155, B1156, B1957, B1958, and or B2969 are indicated, perform the Combination Switch Control Unit input test. If no codes are present, perform the rear MICU input test.
Cause and Solution
Loose or poor connections between the rear MICU and the Combination Switch Control Unit.
Blown fuse in the main under-hood fuse box
Blown fuse in the under-dash fuse relay box
Open or Short Condition between the rear MICU and the Combination Switch Control Unit.
Faulty Combination Switch Control Unit
Video Guide
Diagnostic Info
- DTC Code: B1957
- Brand: Acura