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Home >> Lexus >> 2021 >> LX 570 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Diagnostic Codes (3 Of 7) >> SFI System >> DTC P0418: Secondary Air Injection System Control "A" Circuit; DTC P0419: Secondary Air Injection System Control "B" Circuit [09/2015 - ] >> Typical Enabling Conditions

Typical Enabling Conditions

CASE 1:

Monitor runs whenever following DTCs not stored -
All of following conditions (a) and (b) met -
(a) Secondary air injection pump Operating
(b) Secondary air injection switching valve Operating
Battery voltage 8 V or more
Engine switch On (IG)
Starter OFF
CASE 2:

Monitor runs whenever following DTCs not stored -
All of following conditions (a) and (b) met -
(a) Secondary air injection pump Not operating
(b) Secondary air injection switching valve Not operating
Battery voltage 8 V or more
Engine switch On (IG)
Starter OFF