# Service bulletin 9004335

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: 10184680
- Published by NHTSA: 2020\-12\-28
- Manufacturer's number: 9004335
- Manufacturer's date: 2020\-11\-25
- NHTSA component: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER; EQUIPMENT

## NHTSA's summary

Turbocharger If the turbo is being replaced for an oil leak concern, please inspect the area around the turbo oil feed o\-ring for a leak. The o\-ring is serviced separately and complete turbo replacement may not be necessary.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10184680-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10184680-9999.pdf)

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

## Components

Engine, Equipment and accessories, Turbocharger or supercharger

## Vehicles listed

- 2017 to 2020 ALFA ROMEO GIULIA
- 2018 to 2020 ALFA ROMEO STELVIO
- 2019 to 2020 JEEP CHEROKEE
- 2018 to 2020 JEEP WRANGLER

## Other bulletins for the same vehicles and component

- [1802220](/bulletins/10224078.md), 2022-10-17, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the PCM with the latest available software. The customer may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more ofthe following DTCs:P012A \- Turbocharger/Supercharger Inlet Pressure Sensor 1. P012C \- Turbocharger/Supercharger Inlet Air Pressure Sensor 1 Circuit Low. P012D \- Turbocharger/Supercharger Inlet Air Pressure Sensor 1 Circuit High. P0607 \- ECU Internal Performance. P06EF \- Engine Restart Performance. P050B \- Cold Start Ignition Timing Performance. P0456 \- EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak Verification Test \(SLVT\) to determine if a leak is present in the system. P0128 \- Thermostat Rationality. P0507 \- Idle Speed Performance Higher Than Expected. Customers may also describe the following condition:Excessive radiator fan noise when the A/C is on MAX output. In addition, the following software enhancements are available:Electric Vacuum Pump \(EVP\) update. Fan noise reduction.
- [S2018000012](/bulletins/10184402.md), 2020-12-21, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER; ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Check engine lamp on. Fault code P0244\- TURBOCHARGER/SUPERCHARGER WASTEGATE SOLENOID "A" RANGE/PERFORMANCE is set in the Powertrain Control Module \(PCM a.k.a. ECM\) after the turbocharger assembly has been replaced.
- [9004335](/bulletins/10184380.md), 2020-12-21, Service bulletin: EQUIPMENT; ENGINE AND ENGINE COOLING:ENGINE:OTHER FUEL TYPES:TURBO/SUPERCHARGER. Turbocharger If the turbo is being replaced for an oil leak concern, please inspect the area around the turbo oil feed o\-ring for a leak. The o\-ring is serviced separately and complete turbo replacement may not be necessary.
- [S2018000009](/bulletins/10180217.md), 2020-09-28, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER; ELECTRICAL SYSTEM. Malfunction Indicator Lamp \(MIL\) Illuminated. Diagnostic Trouble Codes \(DTCs\) P00AF ? Turbocharger Boost Control Module ?A? Performance and/or P226C ? Turbocharger Boost Control Module ?A? Slow Response.

JSON: [/v1/bulletins/10184680](/v1/bulletins/10184680)

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