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P0418 Diagnostic Trouble Code Discussion for February 2015

Secondary AIR System Pump Relay Control Circuit Malfunction (Bank 1)

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Trouble Ticket Help Requests for DTC P0418
Help Request Posted
2005 Toyota Sequoia Limited 4.7L MIL Lamp on VIN: 5TDZT38A25
P0418: Secondary Air Injection System Malfunction. ... of no 4th gear.a quick test drive revealed vehicle was in reduced power mode.cleared stored codes and vehicle works like its supposed to but the p0418 code remained.i printed a wiring diagram from alldata and checked the circuit to find all power and groun...
February 23, 2015