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Home >> Kia >> 2021 >> K5 GT-Line, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis - 1.6L (6 Of 7) >> DTC P21B8-00: Cold Start Cylinder 3 Injection Timing >> DTC Information >> DTC Detecting Condition

DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Monitor a injector timing each cylinder
  • Poor connector connection
  • Fuel control system
  • Injector #3
Enable Conditions
  • Engine running (Faster than 80RPM)
  • Normal battery voltage (10 to 16V)
  • No fuel cut
  • Spray mode (3 pulses)
  • Active condition that is to heat a catalyst
  • ECT (-13 to 40°C) (8.6 to 104°F)
  • Intake temperature is higher than -11.25°C (11.75°F)
  • Barometric is higher than 74.5kPa
  • Modelled catalyst temperature is lower than 300°C (572°F) at startup
Threshold Value
  • When difference between target injector angle and actual injector angle is higher than 40°
Diagnostic Time
  • Continuously
MIL ON Condition
  • 2 driving cycles