# Service bulletin 19\-01\-008H

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.

- Type: Service bulletin
- NHTSA id: 10158799
- Published by NHTSA: 2019\-04\-22
- Manufacturer's number: 19\-01\-008H
- Manufacturer's date: 2019\-03\-11
- NHTSA component: ENGINE AND ENGINE COOLING; ENGINE

## NHTSA's summary

This bulletin provides information related to an ECM \(Engine Control Module\) software update for DTC P0128 ?Coolant temp Below thermostat regulating Temperature? logic improvement. There are no drivability symptoms associated with DTC P0128.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10158799-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10158799-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine

## Trouble codes named

P0128

## Vehicles listed

- 2019 HYUNDAI ACCENT

## Other bulletins for the same vehicles and component

- [26\-EM\-016H TSB](/bulletins/11038458.md), 2026-10-14, Service bulletin: ENGINE. Some vehicles equipped with internal combustion engines may exhibit higher\-than\-expected engine oil consumption. This bulletin outlines the combustion chamber cleaning procedure for vehicles diagnosed with this condition. All internal combustion engines consume some engine oil during normal operation, depending on driving conditions and mileage, and this procedure should only be performed when deemed necessary based on inspection and diagnosis of the vehicle as outlined in TSB 26\-EM\-015H, Engine Oil Consumption – Inspection \& Repair Guidelines, or the latest revision.
- [26\-EM\-015H TSB](/bulletins/11038456.md), 2026-10-13, Service bulletin: ENGINE. Certain vehicles equipped with internal combustion engines may exhibit higher\-than\-expected engine oil consumption. This bulletin provides the inspection and repair procedures for vehicles exhibiting this condition. All internal combustion engines consume engine oil as part of normal engine operation. Oil consumption rates may vary based on mileage, operating conditions, driving habits, and maintenance history. Hyundai recommends following the prescribed maintenance schedule and periodically checking the engine oil level using the dipstick to maintain proper engine oil level.
- [23\-EM\-005H](/bulletins/10247189.md), 2023-12-15, Service bulletin: ENGINE AND ENGINE COOLING. This bulletin provides important checkpoint guidelines when performing engine oil and filter change services.
- [22\-EM\-010H](/bulletins/10217251.md), 2022-08-05, Service bulletin: ENGINE AND ENGINE COOLING. Follow the guidelines outlined in this bulletin to inspect and clean or replace certain components of the engine intake system accordingly during engine short block or sub\-assembly replacement.
- [21\-EM\-004H](/bulletins/10190044.md), 2021-04-07, Service bulletin: EQUIPMENT; ENGINE AND ENGINE COOLING. This bulletin provides the service procedure for engine connecting rod bearing clearance testing. Perform the procedure outlined in this bulletin to fulfill the Bearing Clearance Test inspection requirements to determine next required steps.
- [21\-EM\-003H](/bulletins/10189989.md), 2021-04-06, Service bulletin: EQUIPMENT; ENGINE AND ENGINE COOLING. This bulletin provides the inspection procedure and repair guidelines for certain vehicles listed below.
- [Campaign T3S Dea](/bulletins/10158800.md), 2019-04-22, Service bulletin: ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. This bulletin provides information related to an ECM \(Engine Control Module\) software update for DTC P0128 ?Coolant temp Below thermostat regulating Temperature? logic improvement. There are no drivability symptoms associated with DTC P0128.
- [DCS T3S](/bulletins/10158798.md), 2019-04-22, Service bulletin: ENGINE AND ENGINE COOLING. Hyundai Motor America is conducting a Service Campaign to update the ECM software on certain 2019 Model Year Accent vehicles. Service Campaign T3S provides a procedure to update the ECM software.

JSON: [/v1/bulletins/10158799](/v1/bulletins/10158799)

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