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Home >> Honda >> 2021 >> CR-V EX-L, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 63 (Blind Spot Information System - Diagnostics (Hybrid)) >> DTC Troubleshooting >> DTC B18A1, B1E51

DTC B18A1, B1E51

WARNING: This page is about a different variant/trim than selected.

DTC B18A1  : Left Side BSI Radar Unit Internal Circuit Error

DTC B1E51  : Right Side BSI Radar Unit Internal Circuit Error

NOTE: Before you troubleshoot, review the general troubleshooting information .

DTC Description DTC
B18A1 Left side BSI radar unit internal circuit error  
B1E51 Right side BSI radar unit internal circuit error  

DTC (BSI)

  1. Problem verification

    -1. Turn the vehicle to the ON mode.

    -2. Clear the DTC with the HDS.

    -3. Turn the vehicle to the OFF (LOCK) mode.

    -4. Turn the vehicle to the ON mode, then wait for at least 5 seconds.

    -5. Check for DTCs with the HDS.

    DTC Description DTC
    B18A1 Left side BSI radar unit internal circuit error  
    B1E51 Right side BSI radar unit internal circuit error  

    Are any DTCs indicated?

    YES 

    Replace the appropriate BSI radar unit .

    NO 

    Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting .