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Service bulletin 02-171-18R

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 id10143727
Published by NHTSA2018-08-20
Manufacturer's number02-171-18R
Manufacturer's date2018-07-26
NHTSA componentENGINE; ENGINE AND ENGINE COOLING:COOLING SYSTEM; ENGINE AND ENGINE COOLING

NHTSA's summary

This bulletin provides a service procedure for installation of additional foam packing to enhance performance of the Ambient Air Temperature Sensor. The additional foam better insulates the sensor from engine compartment heat which may lead to setting a DTC P0072. This information is applicable to models with or without the Active Grill Shutter (AGS) system.

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, Cooling system

Trouble codes named

P0072

Vehicles listed
SUBARU LEGACY2015, 2016, 2017, 2018
SUBARU OUTBACK2015, 2016, 2017, 2018

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

Other bulletins for the same vehicles and component
11-152-142016-06-02. Service bulletin. SUMMARY TO BE PROVIDED ON A FUTURE DATE.