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2008
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IS 250 RWD, Automatic
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Repair and Diagnosis
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Different car
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Section 171 (Engine Control System - SFI System Diagnostics (2 Of 4))
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DTC P0420 Catalyst System Efficiency Below Threshold (Bank 1); DTC P0430 Catalyst System Efficiency Below Threshold (Bank 2)
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Typical Malfunction Thresholds
Typical Malfunction Thresholds
WARNING:
This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.
TYPICAL MALFUNCTION THRESHOLDS CHART
Oxygen Storage Capacity (OSC) of Three-Way Catalytic Converter (TWC)
Less than 0 11 g