# Service bulletin TJ3671610

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: 10244103
- Published by NHTSA: 2023\-10\-16
- Manufacturer's number: TJ3671610
- Manufacturer's date: 2023\-09\-12
- NHTSA component: ENGINE

## NHTSA's summary

Ghost DTC set, VCU1\-U230056

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10244103-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10244103-9999.pdf)

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

## Components

Engine

## Trouble codes named

U2300

## Vehicles listed

- 2024 VOLVO C40BEV
- 2024 VOLVO S60
- 2024 VOLVO S90
- 2024 VOLVO V60
- 2024 VOLVO V60CC
- 2024 VOLVO V90
- 2024 VOLVO V90CC
- 2024 VOLVO XC40
- 2024 VOLVO XC60
- 2024 VOLVO XC90

## Other bulletins for the same vehicles and component

- [37316.5.0](/bulletins/11037958.md), 2026-10-05, Service bulletin: ENGINE. This is a Technical Journal: DTC ECM\-P06DE00 set, no symptoms. Do not replace any parts or perform additional fault tracing. This is a misdetection and a false positive \(a.k.a. "ghost code"\). The oil pump is actually working as intended
- [35526.1.8](/bulletins/11032678.md), 2026-05-14, Service bulletin: ENGINE. This is a Technical Journal: Text plus 2 PDFs and 1 .PNG Oil Consumption test. Perform the test. Follow service procedure\&\#13; Description and Service sections updated to clarify that vehicle reports are not required.\&\#13;
- [36923.9.1](/bulletins/11032675.md), 2026-05-14, Service bulletin: ENGINE. This is a Technical Journal: Text document plus 1 PDF attachment Coolant Pump Dry Coolant Mix Residue. If the coolant pump has an active leak, a photo must be taken prior to replacement \(see example as in attached picture TJ\_36923\_3\). The photo showing the active water pump leak on the vehicle must be saved for the TMA photo return process and provided when requested.\&\#13; Sealing improvements have been made to PNs 32382367, 32441161 and 32382368, but the part numbers are unchanged. To assist with identification of improved parts, a marking has been added to the parts: an "X," as shown in the attached document TJ\_36923\_1.pdf.\&\#13; If you receive a replacement pump that does not have the "X" marking, please return it and order a replacement
- [37288.4.0](/bulletins/11029182.md), 2026-03-02, Service bulletin: ENGINE. This is a Technical Journal: MIL and DTCs ECM P012807/P01287A. In case of MIL and DTCs P012807 and P01287A set together, follow advice under "Service". A software solution was released in version 3.4.4
- [36923](/bulletins/11029181.md), 2026-03-02, Service bulletin: ENGINE. This is a Technical Journal: Text document plus 1 PDF attachment Coolant Pump Dry Coolant Mix Residue. If the coolant pump has an active leak, a photo must be taken prior to replacement \(see example as in attached picture TJ\_36923\_3\). The photo showing the active water pump leak on the vehicle must be saved for the TMA photo return process and provided when requested.\&\#13; Sealing improvements have been made to PNs 32382367, 32441161 and 32382368, but the part numbers are unchanged. To assist with identification of improved parts, a marking has been added to the parts: an "X," as shown in the attached document TJ\_36923\_1.pdf.\&\#13; If you receive a replacement pump that does not have the "X" marking, please return it and order a replacement
- [37288.4.0](/bulletins/11029174.md), 2026-03-02, Service bulletin: ENGINE. This is a Technical Journal: MIL and DTCs ECM P012807/P01287A. In case of MIL and DTCs P012807 and P01287A set together, follow advice under "Service". A software solution was released in version 3.4.4
- [36923](/bulletins/11028392.md), 2026-02-05, Service bulletin: ENGINE. This is a Technical Journal: Coolant Pump Dry Coolant Mix Residue. If the coolant pump has an active leak, a photo must be taken prior to replacement \(see example as in attached picture TJ\_36923\_3\). The photo showing the active water pump leak on the vehicle must be saved for the TMA photo return process and provided when requested.\&\#13; Sealing improvements have been made to PNs 32382367, 32441161 and 32382368, but the part numbers are unchanged. To assist with identification of improved parts, a marking has been added to the parts: an "X," as shown in the attached document TJ\_36923\_1.pdf.\&\#13; If you receive a replacement pump that does not have the "X" marking, please return it and order a replacement
- [37166](/bulletins/11027190.md), 2026-01-07, Service bulletin: ENGINE. This is a Technical Journal: Check engine light and DTC \- ECM P013926. Do not replace any parts. The hardware is usually not at fault. A new ECM \(Engine Control Module\) software has been released in version 4.2.13.
- [37316](/bulletins/11027177.md), 2026-01-07, Service bulletin: ENGINE. This is a Technical Journal: DTC ECM\-P06DE00 set, no symptoms. Do not replace any parts or perform additional fault tracing.\&\#13; This is a misdetection and a false positive \(a.k.a. "ghost code"\). The oil pump is actually working as intended
- [36923](/bulletins/11025570.md), 2025-11-17, Service bulletin: ENGINE. This is a Technical Journal: Coolant Pump Dry Coolant Mix Residue. If the coolant pump has an active leak, a photo must be taken prior to replacement \(see example as in attached picture TJ\_36923\_3\). The photo showing the active water pump leak on the vehicle must be saved for the TMA photo return process and provided when requested.\&\#13; Sealing improvements have been made to PNs 32382367, 32441161 and 32382368, but the part numbers are unchanged. To assist with identification of improved parts, a marking has been added to the parts: an "X," as shown in the attached document TJ\_36923\_1.pdf.\&\#13; If you receive a replacement pump that does not have the "X" marking, please return it and order a replacement

JSON: [/v1/bulletins/10244103](/v1/bulletins/10244103)

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