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Toyota
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2003
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RAV4 Base, AWD, Standard
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Repair and Diagnosis
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Engine Performance
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System
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Engine Control System Self Diagnostics
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Diagnostic Tests
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DTC P0420: Catalyst System Efficiency Below Threshold (Bank 1) &/Or P0430: Catalyst System Efficiency Below Threshold (Bank 2)
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Possible Causes
Possible Causes
For DTC detection condition and possible causes, see
Fig 1
.
Fig 1: DTC Detection Condition & Possible Causes
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