KIA

TSBTRA079

Manufacturer communications

Publication date: 2018-08-13
Received by NHTSA: 2018-09-10
NHTSA record numbers: 10144237

Manufacturer summary

Original wording in English

TSB: SERVICE ACTION: HCU/TCU LOGIC IMPROVEMENT FOR DTC P1744 (400 MESH EQUIPPED TRANS) (SA351) - This bulletin provides the procedure to improve the logic of the Hybrid Control Unit (HCU) and the Transmission Control Unit (TCU) on some 2013-2015MY Optima Hybrid (TF HEV) vehicles, produced from September 27, 2012 through September 5, 2014, which may experience a malfunction indicator lamp illumination with DTC P1744. To correct this concern, apply the improved logic to the HCU and TCU using the KDS ECU Upgrade function as described in this bulletin.

NHTSA manufacturer communications ↗

Reported code forms

P1744

Check vehicle applicability

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

Make	Model	Model year
Kia	OPTIMA HYBRID	2015
Kia	OPTIMA HYBRID	2014
Kia	OPTIMA HYBRID	2013

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