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Home › Kia › 2016 › Optima Hybrid › Repair and Diagnosis › Engine Performance › System › Engine Control System Diagnosis (3 Of 3) (HEV) › DTC P2237: O2 Sensor Pumping Current Circuit/Open (Bank 1 Sensor 1) › DTC Information › DTC Detecting Condition

DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Electrical Monitoring
  1. Poor Connector Connection
  2. Open in Upstream O2 Sensor Control Circuit
  3. Defected Upstream O2 Sensor
Enable Conditions
  • Sensor Pump Current Valid
  • Battery voltage higher than 11V and lower than 16V
Threshold Value
  • Sensor signal stuck at lambda = 1 or upstream O2 sensor voltage during fuel cut off lower than 2.1V
Diagnostic Time
  • 15 sec.
Mil On Condition
  • 2 Driving Cycle
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