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Service bulletin 07-133-18

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10153187
Published by NHTSA2019-02-19
Manufacturer's number07-133-18
Manufacturer's date2018-11-14
NHTSA componentENGINE

NHTSA's summary

This Service Information Bulletin announces design changes to the engine?s knock sensor which will help improve vehicle assembly line efficiency and increase durability. In some cases, the Check Engine light may illuminate and a knock sensor-related DTC set in the ECM memory: P0327, P0328, P0332 and P0333. The knock sensor for DIT engines is now utilized for NA engines to improve durability and resistance to heat.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine

Trouble codes named

P0327, P0328, P0332, P0333

Vehicles listed
SUBARU B9 TRIBECA2012
SUBARU BRZ2013, 2014, 2015, 2016, 2017
SUBARU CROSSTREK2013 to 2015
SUBARU CROSSTREK2016, 2017
SUBARU FORESTER2011, 2012, 2013, 2014, 2015, 2016, 2017
SUBARU IMPREZA2012, 2013, 2014, 2015, 2016
SUBARU LEGACY2012, 2013, 2014, 2015, 2016, 2017
SUBARU OUTBACK2012, 2013, 2014, 2015, 2016, 2017
SUBARU TRIBECA2013 to 2014
SUBARU WRX2015, 2016, 2017

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
20186062018-11-02. Engine
18V7720002018-11-01. ENGINE AND ENGINE COOLING:ENGINE
16V1620002016-03-21. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER
20161222016-03-17. Engine

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
09-84-22R2026-10-05. Service bulletin. This bulletin announces Warranty Extension and design changes made to the front exhaust pipe and covers to address the concerns of some customers regarding an odor or a rattle-type noise/fluttering sound coming from the undercarriage, during acceleration. This is an revised version of the original bulletin.
02-193-24R2026-07-02. Service bulletin. This bulletin provides updated parts information and a service procedure to follow for removing accumulated carbon deposits from fuel injectors and internal engine components (e.g. intake valves and / or manifold, and combustion chambers). (This is an revised version of the original bulletin.)
09-74-21R2026-07-02. Service bulletin. This bulletin provides updated parts information and a service procedure to follow for removing accumulated carbon deposits from fuel injectors and internal engine components (e.g. intake valves and / or manifold, and combustion chambers). (This is an revised version of the original bulletin.)
02-195-262026-07-01. Service bulletin. This bulletin announces the availability of reprogramming files for the Engine Control Module (ECM) for certain vehicles equipped with 3.6L engines.
02-193-24R2026-06-01. Service bulletin. This bulletin provides updated parts information and a service procedure to follow for removing accumulated carbon deposits from fuel injectors and internal engine components (e.g. intake valves and / or manifold, and combustion chambers).
18-230-262026-06-01. Service bulletin. This bulletin announces the diagnostic procedures to be used when DTCs B1571(REFERENCE CODE INCOMPATIBILITY IMMOBILIZER CM TO ECM) and B1572(IMM CIRCUIT EXCEPT ANTENNA CIRCUIT) are detected by Keyless Access with Push Button Start(KACM).
15-300-22R2026-02-02. Service bulletin. This Bulletin provides the diagnostic procedure for the STARLINK® Remote Engine Start (RES).
09-74-21R2026-01-06. Service bulletin. This bulletin provides updated parts information and a service procedure to follow for removing accumulated carbon deposits from fuel injectors and internal engine components (e.g. intake valves and / or manifold, and combustion chambers).
18-226-25R2026-01-06. Service bulletin. This Service Information Bulletin provides the Service Manual Correction to the diagnostic procedure for DTC B2A16 (Immobilizer Key Collation Diagnosis).
18-228-25R2026-01-06. Service bulletin. This bulletin announces the diagnostic procedures to be used when DTCs P2096 (POST CATALYST FUEL TRIM SYSTEM TOO LEAN BANK 1) and P2097 (POST CATALYST FUEL TRIM SYSTEM TOO RICH BANK 1) are detected by the Engine Control Module (ECM).