11-147-14

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SERVICE INFORMATION
APPLICABILITY:
NUMBER: 11-147-14
2011-15MY STI Models
SUBJECT:	
Revision to Service Procedure for Diagnosing
Secondary Air Injection System DTCs
DATE: 10/15/14
INTRODUCTION
This Service Information bulletin provides additional helpful information to assist in the diagnosis of
DTCs related to the secondary air injection system.
SERVICE PROCEDURE / INFORMATION
Whenever diagnosing any of the air injection system-related DTCs listed in the table below, there
is a possibility the root cause may be related to component(s) found on the opposite bank of the
engine for the displayed DTC. For example, if a DTC P0413 (switching valve “A”) is stored, follow
the diagnosis for both P0413 and P0416 (switching valve “B”) in the appropriate Service Manual.
Another example: if a DTC P2440 (Bank 1-related DTC) is found, follow the diagnosis for P2440
and P2442 (Bank 2-related DTC). Spending the extra diagnostic time initially will decrease the
chances of repeat repair visits and minimize customer inconvenience.
DTC
FAILURE DESCRIPTION
P0413
Secondary Air Injection System Switching Valve “A” Circuit Open
P0414
Secondary Air Injection System Switching Valve “A” Circuit Shorted
P0416
Secondary Air Injection System Switching Valve “B” Circuit Open
P0417
Secondary Air Injection System Switching Valve “B” Circuit Shorted
P2440
Secondary Air Injection System Switching Valve Stuck Open (BANK1)
P2441
Secondary Air Injection System Switching Valve Stuck Closed (BANK1)
P2442
Secondary Air Injection System Switching Valve Stuck Open (BANK2)
P2443
Secondary Air Injection System Switching Valve Stuck Closed (BANK2)
REMINDER: SOA strongly discourages the printing and/or local storage of service information
as previously released information and electronic publications may be updated at any time.
Always refer to STIS for the latest service information before performing any repairs.
CAUTION: VEHICLE SERVICING PERFORMED BY UNTRAINED PERSONS COULD
RESULT IN SERIOUS INJURY TO THOSE PERSONS OR TO OTHERS.
Subaru Service Bulletins are intended for use by professional technicians ONLY. They
are written to inform those technicians of conditions that may occur in some vehicles,
or to provide information that could assist in the proper servicing of the vehicle. Properly
trained technicians have the equipment, tools, safety instructions, and know-how to
do the job correctly and safely. If a condition is described, DO NOT assume that this
Service Bulletin applies to your vehicle, or that your vehicle will have that condition.
Bulletin Number: 11-147-14; Date:10/15/14
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