# Service bulletin L\-TT\-0255\-19

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: 10153281
- Published by NHTSA: 2019\-02\-19
- Manufacturer's number: L\-TT\-0255\-19
- Manufacturer's date: 2019\-01\-16
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

TT: The current engine active test Control the Injection Mode? is not operating as desired when controlling the direct injectors manually on 2GR\-FKS engines. When direct injection is started and then stopped using the active test, current ECU logic does not turn off the direct injectors and can cause DTCs P017200, P017500 and P0160300. To avoid this condition, technicians should raise engine RPM when changing back and forth between the Direct Injection and Port Injection active tests. Use the recommended procedure below to avoid this concern while testing injection mode of FKS equipped vehicles. NOTE: If the active test is used multiple times without using this procedure to raise engine RPM, it may be necessary to reset learning values for fuel trim and Air to Fuel ratio before returning vehicle to customer.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10153281-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10153281-9999.pdf)

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

## Components

Engine

## Trouble codes named

P0172, P0175

## Vehicles listed

- 2020 LEXUS ES350
- 2016 to 2017 LEXUS GS 200T
- 2017 to 2020 LEXUS GS 350
- 2020 LEXUS GS300
- 2016 to 2017 LEXUS IS 250
- 2018 to 2020 LEXUS IS 300
- 2018 to 2020 LEXUS LS500
- 2016 to 2017 LEXUS RC 200T
- 2018 to 2020 LEXUS RC 300
- 2016 to 2019 LEXUS RC 350
- 2020 LEXUS RX350

JSON: [/v1/bulletins/10153281](/v1/bulletins/10153281)

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