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DTC 65: Brake Fluid Level Low

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION  ).
  1. Check the brake fluid level in the master cylinder reservoir (see BRAKE SYSTEM BLEEDING ).

    Is the brake fluid level OK? 

    YES  - Go to step 2.

    NO  - Inspect the brake pads: Front (see FRONT BRAKE PAD INSPECTION AND REPLACEMENT ), rear (see REAR BRAKE PAD INSPECTION AND REPLACEMENT ), and replace worn out brake pads, then recheck.

  2. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
  3. Clear the DTC with the HDS.
  4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
  5. Disconnect the brake fluid level switch 2P connector (see step 6 under MASTER CYLINDER REPLACEMENT ).
  6. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
  7. Check for DTCs with the HDS.

    Is DTC 65 indicated? 

    YES  - Go to step 8.

    NO  - Replace the master cylinder (see MASTER CYLINDER REPLACEMENT ).

  8. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
  9. Disconnect the gauge control module 32P connector (see GAUGE CONTROL MODULE REPLACEMENT ).
  10. Check for continuity between brake fluid level switch 2P connector terminal No. 2 and body ground.
    Fig 1: Checking Continuity Between Brake Fluid Level Switch 2P Connector Terminal No. 2 And Body Ground
    G08067185Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  - Repair a short to body ground in the wire between the gauge control module and the brake fluid level switch.

    NO  - Go to step 11.

  11. Update the VSA modulator-control unit if it does not have the latest software (see VSA MODULATOR-CONTROL UNIT UPDATE  ).
  12. Turn the ignition switch to LOCK (0), then turn it to ON (II) again, or select the OFF mode, then the ON mode.
  13. Check for DTCs with the HDS.

    Is DTC 65 indicated? 

    YES  - Check for loose terminals in the VSA modulator-control unit 47P connector. If the VSA modulator-control unit was updated and the symptom/indication is still present, replace the VSA modulator-control unit (see VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION  ).

    NO  - If the VSA modulator-control unit was updated, troubleshooting is complete. If any other DTCs are indicated, go to the indicated DTCS TROUBLESHOOTING .

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