Service bulletin 122-E6U4B-12

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	10153573
Published by NHTSA	2019-02-25
Manufacturer's number	122-E6U4B-12
Manufacturer's date	2018-11-20
NHTSA component	POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT

NHTSA's summary

Subject: Shift lever Information: The shift lever can move in longitudinal direction during load changes in 4th gear.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Transmission and driveline, Automatic transmission

Vehicles listed
PORSCHE 911	2016
PORSCHE 911	2018
PORSCHE 911 CARRERA	2013, 2014, 2015, 2016 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 CARRERA 4	2013 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 CARRERA S	2012 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 GT3	2013, 2014, 2015 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 GT3 RS	2016 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 TARGA 4	2013, 2014, 2015, 2016 (the catalog's model; the bulletin names a series or trim of it)

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
APA0	2023-06-06. Service bulletin. Porsche intranet posting with information on APA0 Recall campaign – Re-programming DME control unit and transmission control unit
No. 148-21	2022-03-03. Service bulletin. Technical information for recall campaign AMC0. re-programing DME and transmission control unit.
WMD1	2021-06-03. Service bulletin. Porsche intranet posting with preliminary information for Porsche workshop campaign WMD1 Workshop Campaign -PCM Software Update.
No. 2020	2020-10-01. Service bulletin. Information on new special tool for offline updates of the PCM Versions 4 and 5.
122-Q9A9C-10	2017-10-15. Service bulletin. Customer Concern: The customer states there is no drive when the vehicle is in third gear. Information: This was caused by poor welding of the fixed gear. The fastening process has been changed. Resolution: Replace the transmission. Refer to WM343519 for the proper replacement procedure.
122-Q3Y2A-05	2017-09-14. Service bulletin. Concerns: Porsche Communication Management (PCM) 3.1 Information: This is to inform you of a voluntary Workshop Campaign on the above-mentioned vehicles. In the event of faulty transmission of XMdata by the satellite radio operator, there is a possibility that significantly more data than usual will be sent at times. As a result, the amount of data sent can no longer be processed by PCM and cyclical restarts of the PCM system can then occur continuously.
122-R2J7H-06	2017-08-01. Service bulletin. Concerns: Electronic logbook in Porsche Communication Management (PCM) 3.1 Information: This is to inform you of a voluntary Workshop Campaign on the above-mentioned vehicles. Implausible entries can appear in the logbook (e.g. negativemileage, double entries) on the affected vehicles due to incorrect PCM software. Earlier entries in the logbook can even be overwritten in some cases.
122-M6L9B-06	2017-08-01. Service bulletin. Concerns: Electronic logbook in Porsche Communication Management (PCM) 3.0 Imformation: This is to inform you of a voluntary Workshop Campaign on the above-mentioned vehicles. Implausible entries can appear in the logbook (e.g. negativemileage, double entries) on the affected vehicles due to incorrect PCM software. Earlier entries in the logbook can even be overwritten in some cases.
122-Z5F9U-06	2017-08-01. Service bulletin. Concerns: PDK control unit Information: This is to inform you of a voluntary Workshop Campaign on certain 911 Carrera (991) and 911 Carrera S (991) vehicles. The PDK control unit can sometimes be misdiagnosed on the affected vehicles due to a software error if the engine is switched off in selector-lever positions "P" or "D" and is then re-started again in selector-lever position "N". As a result, fault code "P1772 - Gear valve 2 stuck on pressure" is stored in the fault memory of the PDK control unit and the PDK transmission switches to the reduced driving program until the ignition is switched off and on again.
122-D6U5E-06	2017-08-01. Service bulletin. Concerns: PDK control unit Information: This is to inform you of a voluntary Workshop Campaign on the above-mentioned vehicles. A shift rod movement at a shift gate that was not selected can be detected incorrectly on the affected vehicles due to a software error. As a result, fault code "P1767 - Hydraulic multiplexer fault" can be stored in the fault memory of the PDK control unit and the PDK transmission can switch to the reduced driving programme until the ignition is switched off and on again.