# Service bulletin 0900621

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: 10230146
- Published by NHTSA: 2023\-01\-17
- Manufacturer's number: 0900621
- Manufacturer's date: 2021\-05\-28
- NHTSA component: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER

## NHTSA's summary

Incorrect Turbocharger Air Outlet Pipe Nuts This bulletin involves replacing the turbocharger air outlet pipe nuts. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find that the following Diagnostic Trouble Code \(DTC\) has been set:P0299 \- Turbocharger Underboost. The customer may also describe the following:An air leak noise from the engine compartment.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10230146-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10230146-9999.pdf)

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

## Components

Engine, Turbocharger or supercharger

## Trouble codes named

P0299

## Vehicles listed

- 2022 JEEP COMPASS

## Other bulletins for the same vehicles and component

- [0900621](/bulletins/10223374.md), 2022-10-17, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. Incorrect Turbocharger Air Outlet Pipe Nuts This bulletin involves replacing the turbocharger air outlet pipe nuts. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find that the following Diagnostic Trouble Code \(DTC\) has been set:P0299 \- Turbocharger Underboost. The customer may also describe the following:An air leak noise from the engine compartment.

JSON: [/v1/bulletins/10230146](/v1/bulletins/10230146)

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