# Service bulletin 09\-104\-23R

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: 10244897
- Published by NHTSA: 2023\-11\-06
- Manufacturer's number: 09\-104\-23R
- Manufacturer's date: 2023\-10\-12
- NHTSA component: ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\)

## NHTSA's summary

This bulletin announces availability of reprogramming files for the Engine Control Module \(ECM\) to address rare cases of DTCs P0011 \(“A” Camshaft Position – Timing Over\-Advanced or System Performance Bank 1\) and P0021 \(“A” Camshaft Position – Timing Over\-Advanced or System Performance Bank 2\) detected by the ECM. The new files contain enhanced logic to optimize the detection parameters of DTCs P0011 \& P0023.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10244897-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10244897-9999.pdf)

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

## Components

Electrical system, Engine, Engine control module

## Trouble codes named

P0011, P0021, P0023

## Vehicles listed

- 2023 SUBARU FORESTER

## Other bulletins for the same vehicles and component

- [09\-104\-23](/bulletins/10237260.md), 2023-06-05, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\); ENGINE AND ENGINE COOLING. This bulletin announces availability of reprogramming files for the Engine Control Module \(ECM\) to address rare cases of DTCs P0011 \(“A” Camshaft Position – Timing Over\-Advanced or System Performance Bank 1\) and P0021 \(“A” Camshaft Position – Timing Over\-Advanced or System Performance Bank 2\) detected by the ECM.

JSON: [/v1/bulletins/10244897](/v1/bulletins/10244897)

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