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Home >> Lexus >> 2009 >> LS 460L AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System - Diagnostic Codes (2 Of 4) >> DTC P0420 Catalyst System Efficiency Below Threshold (Bank1); DTC P0430 Catalyst System Efficiency Below Threshold (Bank 2) >> Confirmation Driving Pattern
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Confirmation Driving Pattern

HINT:

Performing this confirmation pattern will activate the catalyst monitor. This is very useful for verifying the completion of a repair.

Fig 1: Vehicle Speed Graph
G06189915Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. Connect the Techstream to the DLC3.
  2. Turn the engine switch on (IG).
  3. Turn the Techstream ON.
  4. Clear DTCs (if set) (see DTC CHECK/CLEAR ).
  5. Enter the following menus: Powertrain/Engine/Monitor.
  6. Check that Catalyst/Status2 is Incomplete.
  7. Start the engine and warm it up.
  8. Drive the vehicle at between 40 mph and 70 mph (64 km/h and 113 km/h) for at least 10 minutes.
  9. Those items will change to Complete as Catalyst monitor operates.
  10. Enter the following menus: Powertrain/Engine/Trouble Codes/Pending; then check if any DTCs (any pending DTCs) are set.

HINT:

If Catalyst does not change to Complete, and any pending DTCs fail to set, extend the driving time.