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Home >> Kia >> 2021 >> Niro Plug-In Hybrid EX >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (PHEV) (2 Of 6) >> DTC P016B-00: Closed Loop Air/Fuel Ratio Control At Limit-System Too Rich >> DTC Information >> DTC Detecting Condition
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DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Monitoring the deviation of short term fuel trim
  • Poor connector connection
  • Faulty PCV
  • Faulty injector
  • Faulty fuel system
  • Faulty EVAP System
Enable Condition
  • Engine coolant temperature is greater than 55°C (131°F)
  • Sensor ceramic temperature is greater than 640°C (1184°F)
  • Engine coolant temperature is greater than 5.25°C (41°F)
  • Fuel trim active
Threshold Value
  • Short term trim is less than -30%
Diagnostic Time
  • 90s
MIL ON Condition
  • 2 driving cycles
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