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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Automatic Transmission (DTC/Circuit Diagnosis) (Re7R01B)) >> DTC/Circuit Diagnosis >> DTC P0733: 3GR Incorrect Ratio >> DTC Description >> Fail-Safe

DTC Description: Fail-Safe

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

1st Fail-safe

The mode that the vehicle can stop safely, to prompt the driver to stop if the malfunction occurs and to shift to 2nd fail-safe early. It shifts to 2nd fail-safe or final fail-safe after the vehicle stopped.

2nd Fail-safe

The mode that the vehicle shifts to final fail-safe without changing the behavior, by identifying the malfunctioning parts in the condition that the driving force required for the driving is secured.

Final Fail-safe

  • Selects the shifting pattern that the malfunctioning parts identified at 1st fail-safe and 2nd fail-safe are not used, and then secure the driving force that is required for the driving.
  • The mode that the shifting performance does not decrease by normal shift control.

Vehicle condition

Vehicle behavior for 1st fail-safe

Vehicle behavior for 2nd fail-safe

Vehicle behavior for final fail-safe

Small gear ratio difference

Engine torque limit: Max 150 Nm (15 kg-lb, 111 ft-lb)

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Engine torque limit: Max 150 Nm (15 kg-lb, 111 ft-lb)

Great gear ratio difference

Neutral malfunction between the gears of 1 - 2 - 3 and 7

  • Locks in 2GR, 3GR or 4GR
  • Manual mode is prohibited

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  • Locks in 1GR
  • The shifting between the gears of 1 - 2 can be performed
  • The shifting between the gears of 1 - 2 - 3 can be performed
  • The shifting between the gears of 4 - 5 - 6 can be performed
  • Manual mode is prohibited

Other than the above

  • Locks in 1GR, 2GR, 3GR, 4GR, 5GR or 6GR
  • Fix the gear while driving
  • Manual mode is prohibited
  • The shifting between the gears of 1 - 2 - 3 can be performed
  • Manual mode is prohibited
  • Locks in 1GR
  • The shifting between the gears of 1 - 2 can be performed
  • The shifting between the gears of 1 - 2 - 3 can be performed
  • The shifting between the gears of 2 - 3 - 4 can be performed
  • The shifting between the gears of 3 - 4 can be performed
  • The shifting between the gears of 4 - 5 - 6 can be performed
  • Manual mode is prohibited