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Home >> VinFast >> 2023 >> VF8 Plus >> Repair and Diagnosis (Single Page) >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Vehicle Control Diagnosis (10 Of 10) >> DTC U1255-97: Invalid Data Received from Active Grill Shutter "A" Control Module - Component or System Operation Obstructed or Blocked >> VinFast DTC Guided Repair Instruction >> Operating Conditions

Operating Conditions

Enable Criteria Ignition is active
Failure Criteria AGS_1: AGS feedback of the block detection (Interface: AGM_1_Sta_Blockage [0x31] on LIN1) == 1 "error".
AGS_2: AGS feedback actuator block detection (Interface: Actuator_blocked [0x31] on LIN1) == 1 "error".
Failure/Mature Time 100 ms
Pass Criteria AGS_1: AGS feedback of the block detection (Interface: AGM_1_Sta_Blockage [0x31] on LIN1) == 0 "no error".
AGS_2: AGS feedback actuator block detection (Interface: Actuator_blocked [0x31] on LIN1) == 0 "no error".
Pass/De-mature Time 200 ms
Failure Aging 40 driving cycles without failure
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