Service bulletin 122-C4N9A-09
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 | 10081245 |
| Published by NHTSA | 2016-10-03 |
| Manufacturer's number | 122-C4N9A-09 |
| Manufacturer's date | 2016-08-08 |
| NHTSA component | POWER TRAIN:AUTOMATIC TRANSMISSION |
NHTSA's summary
"THE UNWARRANTED ERROR MESSAGE ""GEARBOX FAULT"" CAN APPEAR SPORADICALLY IN THE INSTRUMENT CLUSTER ON THE AFFECTED VEHICLES BECAUSE THE DIAGNOSTIC FUNCTION FOR THE HYDRAULIC VALVES IN THE PDK TRANSMISSION IS TOO SENSITIVE. IF THIS HAPPENS, THE PDK TRANSMISSION SWITCHES TO THE REDUCED DRIVING PROGRAMMED AND THE CHECK ENGINE LIGHT IN THE INSTRUMENT CLUSTER WILL BE ACTIVATED. RE-PROGRAM THE PDK CONTROL UNIT USING THE PIWIS TESTER WITH TEST SOFTWARE VERSION 16.400.010 (OR HIGHER) INSTALLED."
The document
No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.
Components
Transmission and driveline, Automatic transmission
| PORSCHE 911 | 2017 |
|---|
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 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-C5R5V-10 | 2017-11-08. Service bulletin. During diagnostic monitoring of the hydraulic control valves of the PDK transmission, a fault memory entry is stored in the PDK control unit if an implausible shift rod movement is detected. The PDK control unit therefore initiates a flushing measure in order to flush particles of dirt determined as the cause of the fault out of the hydraulic control valves. As soon as the fault memory entry was activated in two consecutive driving cycles, there was a possibility with the previous diagnostic configuration that the message "Engine control fault ? visit workshop ? Driving permitted" would be displayed in the instrument cluster although the flushing measure had already been carried out successfully and a fault was no longer present. To prevent this from happening, the diagnostic function for monitoring the hydraulic control valves will be adapted accordingly. |