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Home >> Genesis >> 2021 >> G90 5.0 Ultimate, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 30 (Engine Control System Diagnosis - 3.3L (5 Of 9)) >> DTC P0430-00: Catalyst System Efficiency Below Threshold (Bank 2) >> Component Inspection >> Monitor the Catalyst Converter

Monitor the Catalyst Converter

WARNING: This page is about a different variant/trim than selected.
  1. Clear DTC.
  2. Start the engine and warm it up until the radiator fan comes on (at least 10 minutes).
  3. Drive at a steady speed between 45-55 mph (72-88 km/h) for 30 seconds.
  4. Stop and then maintain idle state for 120 seconds in D-position.
  5. Repeat step  3 once again.
  6. Stop and then keep it in idle state (D-position) for 120 seconds.
  7. Repeat step  3 once again.
  8. Stop and then maintain idle state for 120 seconds in D-position.
  9. IG "OFF"
  10. Repeat steps  3 through  9 three times.
  11. Check if catalyst monitoring readiness is complete. so, if the readiness is incomplete, repeat steps  2 through  10.
  12. Does the GDS show DTC P0430?

    YES 

    • Substitute with a known - good Catalyst Converter and check the signal waveform of HO2S for proper operation. If the problem is corrected, go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO 

    • It was intermittent failure.
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