# Service bulletin TTT069822

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: 10220186
- Published by NHTSA: 2022\-09\-15
- Manufacturer's number: TTT069822
- Manufacturer's date: 2022\-06\-20
- NHTSA component: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR

## NHTSA's summary

TT: Some 17\-22MY Highlander and 17\-20MY Sienna vehicles may experience a MIL ON condition with DTC\(s\) P042000, and/or P043000. This issue could involve deteriorated catalyst material from the bank 1 or bank 2 catalytic converter.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10220186-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10220186-9999.pdf)

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

## Components

Engine, Exhaust and emissions, Catalytic converter

## Trouble codes named

P0420, P0430

## Vehicles listed

- 2017 to 2022 TOYOTA HIGHLANDER
- 2017 to 2020 TOYOTA SIENNA

JSON: [/v1/bulletins/10220186](/v1/bulletins/10220186)

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