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Catalytic Converter Monitor and Readiness Code: Notes

WARNING: This page is about a different car, the 2006 Acura MDX, 2005 Acura MDX, 2004 Acura MDX, and 2003 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • Do not turn the ignition switch off during the procedure.
  • All readiness codes are cleared when the battery is disconnected or when the PCM is cleared with the HDS.
  • Low ambient temperatures or excessive stop-and-go traffic may increase the drive time needed to switch the readiness code from incomplete to complete.
  • The readiness code will not switch to complete until all the enable criteria are met.
  • If a fault in the secondary HO2S system caused the MIL to come on, the readiness code cannot be set to complete until you correct the fault.
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