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Home >> Infiniti >> 2019 >> Q50 Pure, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 249 (Engine Control System (DTCS) (6 Of 19)) >> DTC Diagnosis >> Engine (ECM) >> DTC P0174: Fuel Injection System Function >> DTC Description - VR30DDTT Engine >> Fail-Safe
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DTC Description - VR30DDTT Engine: Fail-Safe

WARNING: This page is about a different car, the 2020 Infiniti Q50. However, it is still accessible from the selected car via links, so may be relevant.

Fail safe mode

Vehicle behavior

Traveling control mode

ECM controls the accelerator pedal depression speed to make it slower than actual speed. This causes a drop in accelerating performance and encourages the driver to repair malfunction.

NOTE: ECM does not control the accelerator pedal releasing speed.

Combustion control mode
  • Stops feedback control of idle speed and controls with specified speed.
  • Stops recovery speed control by the fuel cut at decelerating and controls with specified speed.
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