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HOMESERVICE MANUALSGENESIS2021GV80 2.5T ADVANCED, AWDREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROL SYSTEM DIAGNOSIS - 2.5L (6 OF 6)DTC P2178-00: SYSTEM TOO RICH OFF IDLE BANK 1DTC INFORMATION AND INSPECTIONDTC DETECTING CONDITION
2021 Genesis GV80 2.5T Advanced, AWD

DTC Information And Inspection: DTC Detecting Condition

2021 Genesis GV80 2.5T Advanced, AWDSECTION DTC Detecting Condition
Item Detecting Condition Possible Cause
DTC Strategy
  • Monitoring the deviation of short term fuel trim
  1. Poor connector connection
  2. Intake/Exhaust or purge system air leakage
  3. Faulty PCV system
  4. Faulty oxygen sensor, air flow sensor or throttle position sensor
  5. Fuel related system failure
Enable Condition
  • Engine Coolant Temperature (ECT) is greater than 56°C (132.8°F)
  • Fuel trim active:
    • No relevant failure (Upstream O2 sensor, Injector valve, ETC in limp home state)
    • Measured Tip temperature is greater than 720°C (1328°F)
    • Integrated air flow is between 20 and 600g (depending on air temperature)
  • Engine speed is faster than 512 RPM
  • Barometric pressure is greater than 75 kPa
Threshold Value
  • Average of short term fuel trim is less than or equal to -30%
Diagnostic Time
  • Continuous
MIL ON Condition
  • 2 driving cycles
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.