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Home >> Honda >> 2006 >> Civic Si >> Repair and Diagnosis (Single Page) >> Brakes >> Traction Control >> Abs (Anti-Lock Brake System) (Except Hybrid) >> DTC Troubleshooting >> DTC 81-11: Central Processing Unit (CPU) Internal Circuit Malfunction; DTC 81-51: Central Processing Unit (CPU) Internal Circuit Malfunction; DTC 81-52: Central Processing Unit (CPU) Internal Circuit Malfunction
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DTC 81-11: Central Processing Unit (CPU) Internal Circuit Malfunction; DTC 81-51: Central Processing Unit (CPU) Internal Circuit Malfunction; DTC 81-52: Central Processing Unit (CPU) Internal Circuit Malfunction

  1. Turn the ignition switch to ON (II).
  2. Clear the DTC with the HDS.
  3. Test-drive the vehicle.
    NOTE: Drive the vehicle on the road, not on a lift.
  4. Check for DTCs with the HDS.

    Is DTC 81-11, 81-51, or 81-52 indicated? 

    YES  -Replace the ABS modulator-control unit: Except Si model (see REMOVAL - EXCEPT SI MODEL  ), Si model (see REMOVAL - SI MODEL  ).

    NO  -Intermittent failure, the system is OK at this time.