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Service bulletin 11-178-18

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 id10130276
Published by NHTSA2018-03-13
Manufacturer's number11-178-18
Manufacturer's date2018-01-30
NHTSA componentSTEERING:GEAR BOX (OTHER THAN RACK AND PINION)

NHTSA's summary

6MT MODELS ONLY. This bulletin announces availability of ECM reprogramming files to optimize the ECM with improved diagnostic logic for DTC P0852 (Park/Neutral Switch Input Circuit High) detection. If the shifter is moved too fast, the gear change may not be properly detected by the ECM causing the P0852 to set.

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

Steering, Steering gear

Trouble codes named

P0852

Vehicles listed
SUBARU WRX2018

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
4-26-202021-01-05. Service bulletin. This bulletin describes a design change to the replacement hydraulic-type steering gearbox assembly.