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Service bulletin TTV21I4

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 id10145155
Published by NHTSA2018-10-09
Manufacturer's numberTTV21I4
Manufacturer's date2018-09-06
NHTSA componentEQUIPMENT

NHTSA's summary

TECH TIME VOLUME 21 ISSUE 4 - 1 2019MY (JFa) Optima Equipped with Embedded Modem 2 Techline FAQs 2 Latest Technical Service Bulletins, Service Actions and Campaigns 3 New Hybrid Technology Course from Kia University 4 Stinger Engine Oil Capacity & Grade Specs 5 Speedometer/Odometer Recalibration Procedure 6 A/C Refrigerant Reference Guide (2018/2019MY) 7 2019MY (BDm) Forte Technical Highlights 7 2017MY (YG) Cadenza DTC P0456/P0442 with Fuel Pump Seal Damage 8 Test Your Tech Knowledge - Word Scramble 9 2018 Kia University Certificates of Achievement Winners 22 Capturing and Emailing KDS Images Using Borescope 22 Test Your Tech Knowledge - Word Scramble Answers

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

Equipment and accessories

Trouble codes named

P0442, P0456

Vehicles listed
KIA KIA

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