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Home >> Toyota >> 2021 >> Sequoia TRD Pro >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (3UR-FE) - Diagnostic Codes (4 Of 9) >> SFI System >> DTC P0418: Secondary Air Injection System Control "A" Circuit; DTC P0419: Secondary Air Injection System Control "B" Circuit [08/2019 - ] >> Component Operating Range
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Component Operating Range

Diagnostic signal duty ratio from air injection control driver 70% or more, and 90% or less when secondary air injection system operating.
0% when secondary air injection system not operating.
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