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Service bulletin TSB 18-2355

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 id10152461
Published by NHTSA2019-01-07
Manufacturer's numberTSB 18-2355
Manufacturer's date2018-11-28
NHTSA componentENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR

NHTSA's summary

Some 2018-2019 Mustang vehicles built on or before 17-Oct-2018 and equipped with a 2.3L engine may exhibit an illuminated MIL with DTC P0420. Follow the Service Procedure steps to correct the condition.

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, Exhaust and emissions, Catalytic converter

Trouble codes named

P0420

Vehicles listed
FORD MUSTANG2018, 2019

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