# Service bulletin Dealer Letter an

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: 10156134
- Published by NHTSA: 2019\-04\-01
- Manufacturer's number: Dealer Letter an
- Manufacturer's date: 2012\-10\-10
- NHTSA component: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM:SOFTWARE; ENGINE

## NHTSA's summary

VOLKSWAGEN DEALERSHIP COMMUNICATION \(UPDATE 23K9 TDI Software\): Volkswagen informs dealers on an upcomming update necessary to address an impendending issue. The Diagnostic strategy of ECM software is too sensitive, causing the MIL to illuminate and the following faults to set in the ECM/EDC memory during system checks: ? P208C ? Reductant Pump ?A? Control Circuit Low ? P208E ? Reductant Injection Valve Stuck Closed Bank 1 Unit 1 ? P20EE ? SCR NOx Catalyst Efficiency Below Threshold Bank 1 ? P150A ? Engine Off Timer Performance The corrective action taken to solve this issue was an Software update.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2012/MC-10156134-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2012/MC-10156134-9999.pdf)

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

## Components

Electrical system, Engine, Equipment and accessories, Labels and manuals, Software

## Trouble codes named

P150A, P208C, P208E, P20EE

## Vehicles listed

- 2011 to 2012 VOLKSWAGEN TOUAREG

## Other bulletins for the same vehicles and component

- [911406](/bulletins/10253194.md), 2024-04-15, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; UNKNOWN OR OTHER; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. RNS 850 Radio Software Update
- [TB011407](/bulletins/10241310.md), 2023-08-28, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; UNKNOWN OR OTHER. Software Version Management
- [Guide](/bulletins/10240605.md), 2023-08-14, Service bulletin: UNKNOWN OR OTHER; ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\). P0102, P1128, P1296 \- WA front oxygen sensor faults
- [911406](/bulletins/10239571.md), 2023-07-24, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. RNS 850 Radio Software Update
- [VOS\-23\-21](/bulletins/10238400.md), 2023-07-10, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. This communication is a notice for software changes with the ODIS program for specific cars.
- [V011812201460319](/bulletins/10238301.md), 2023-07-10, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Software Version Management \(SVM\) instruction.
- [VOS\-23\-14](/bulletins/10238206.md), 2023-07-10, Service bulletin: ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:SOFTWARE. This communication is a notice for software changes with the ODIS program for specific cars
- [VOS\-22\-27](/bulletins/10214810.md), 2022-07-01, Service bulletin: ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:SOFTWARE. This document outlines updates to the ODIS diagnostic software. Updates include corrected diagnostic test plans for the stated vehicles.
- [A002155201173212](/bulletins/10204722.md), 2022-01-05, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. This bulletin contains general instructions for software updates.
- [V011812201460317](/bulletins/10198233.md), 2021-07-02, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Software Version Management \(SVM\)

JSON: [/v1/bulletins/10156134](/v1/bulletins/10156134)

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