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Home >> Honda >> 2021 >> Accord Touring >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle - DTC Diagnostics (P0501 - P0871) (Except Hybrid) >> DTC Troubleshooting >> P07AC, P07AD (A/T)

P07AC, P07AD (A/T)

DTC P07AC  : Brake B3 Stuck OFF

DTC P07AD  : Brake B3 Stuck ON

NOTE:  Before you troubleshoot, review the General Troubleshooting Information .

DTC Description Confirmed DTC Pending DTC Freeze Frame
P07AC Brake B3 Stuck OFF      
P07AD Brake B3 Stuck ON      

DTC (A/T)

  1. Problem verification

    -1. Raise the vehicle on a lift. Make sure it is securely supported, and allow all four wheels to rotate freely.

    -2. Turn the vehicle to the ON mode.

    -3. Clear the DTC with the HDS.

    -4. Test-drive under these conditions:

    DTC Test Condition
    P07AC
    • Start the engine, disable the VSA .
    • Run the vehicle from 1st gear to 2nd gear, then slow down and stop the vehicle.
    • While pressing the brake pedal, shift the transmission to R position/mode.
    P07AD
    • Start the engine, disable the VSA , and wait for at least 10 seconds in P position/mode.
    • Run the vehicle in 9th gear with steady cruising, then slow down and stop the vehicle.

    -5. Check for Pending or Confirmed DTCs with the HDS.

    DTC Description Confirmed DTC Pending DTC Freeze Frame
    P07AC Brake B3 Stuck OFF      
    P07AD Brake B3 Stuck ON      

    Is DTC P07AC or P07AD indicated?

    YES 

    The failure is duplicated. Replace the valve body assembly .

    NO 

    Intermittent failure, the system is OK at this time. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot.