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Home › Genesis › 2024 › GV80 3.5T Advanced › Repair and Diagnosis › Engine Performance › System › Engine Control System Diagnosis - 3.5L (8 Of 9) › DTC P2251-00: O2 Sensor Negative Current Control Circuit/Open Bank 1 Sensor 1 › DTC Information And Inspection › DTC Detecting Condition

DTC Information And Inspection: DTC Detecting Condition

Troubleshooting Condition Possible Cause
Main Action
  1. Electrical inspection
  1. Poor contact of connector
  2. Open in signal circuit of Oxygen Sensor (B1S1)
  3. Oxygen Sensor (B1S1)
Prerequisite Condition
  • Battery voltage is between 10V and 16V
  • Oxygen sensor ceramic temperature is 640°C (1, 184°F)
  • No code related to oxygen sensor grounding/battery short circuit
Threshold Value
  1. Virtual Ground circuit open (Oxygen Sensor (B1S1))
Diagnostic Time
  1. Continuously
MIL
  1. 2nd driving cycles
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