LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2021 >> Sequoia TRD Pro >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (3UR-FE) - Diagnostic Codes (3 Of 9) >> SFI System >> DTC P0418: Secondary Air Injection System Control "A" Circuit; DTC P0419: Secondary Air Injection System Control "B" Circuit [08/2017 - 08/2019] >> Typical Enabling Conditions
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Typical Enabling Conditions

CASE 1:

Monitor runs whenever following DTCs not present -
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
Ignition switch ON
Starter OFF
CASE 2:

Monitor runs whenever following DTCs not present -
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
Ignition switch ON
Starter OFF