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Home › Toyota › 2002 › Highlander Base, 2.4 D, AWD › Repair and Diagnosis › Engine Performance › System › Engine Control System Self-Diagnostics - 4-Cylinder › Diagnostic Tests › DTC P0420 Or DTC P0430: Catalyst System Efficiency Below Threshold › Notes

DTC P0420 Or DTC P0430: Catalyst System Efficiency Below Threshold: Notes

NOTE: For component location, see appropriate illustration in THEORY & OPERATION article.
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