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Service bulletin 122-T8X6Q-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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10081380
Published by NHTSA2016-10-04
Manufacturer's number122-T8X6Q-09
Manufacturer's date2016-08-11
NHTSA componentELECTRICAL SYSTEM:SOFTWARE; ENGINE AND ENGINE COOLING:COOLING SYSTEM

NHTSA's summary

"THERE MAY BE A DIFFERENCE BETWEEN THE ACTUAL COOLANT TEMPERATURE AND THE PREDICTED TEMPERATURE DUE TO INCORRECT POSITIONING OF THEMAP-CONTROLLED THERMOSTAT DURING THE WARM-UP PHASE ON THE AFFECTED VEHICLES. THE ERROR MESSAGE ""FAULT COOLING SYSTEM"" WILL THEN BE DISPLAYED IN THE INSTRUMENT CLUSTER AND THE CHECK ENGINE LIGHT WILL COME ON."

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

Electrical system, Engine, Cooling system, Software

Vehicles listed
PORSCHE 9112017

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
PIWIS2401j2024-03-04. Service bulletin. Information for PIWIS tester update 42.500.020
PIWIS2301ay2023-09-09. Service bulletin. Information on PIWIS tester update 42.100.060 & .065
No. 72-172021-02-01. Service bulletin. Instructions for reworking the fan motor in the event that the HVAC does not function.
PIWIS2001v2020-07-02. Service bulletin. Information on new PIWIS tester update 39.500.020 and .025.
No. 41-202020-07-01. Service bulletin. Instructions on how to perform a PVTS Software update in the event that a car will not start.
122-E9N4X-012018-01-29. Service bulletin. Optimized software for Porsche Communication Management (PCM) 4.0 has been used in standard production in order to further improve the general performance of the system. These optimizations must be implemented retrospectively even for vehicles manufactured before the date of introduction. Action Required: ? Update PCM software using an SD card ? Re-code the PCM using PIWIS Tester test software version 34.800.030 (or higher
122-Z9T3E-122017-12-14. Service bulletin. Remedial action In the event of a customer complaint, re-program and code Lane Change Assist control units using 9900 - PIWIS Tester III.
122-Y2D8V-112017-10-15. Service bulletin. In the course of annual model improvements, various functionalities of the Porsche Communication Management (PCM) system have been enhanced, optimisations have been implemented and the general performance of the system has been further improved at the same time. These function enhancements and optimisations must be implemented retrospectively even for vehicles manufactured before the model improvement measures were introduced. To this end, the PCM software will be updated on the affected vehicles using an SD card. Due to the changes to the PCM, the instrument cluster must also be re-programmed using the PIWIS Tester in order to ensure consistency between the displays in PCM and the instrument cluster.
122-H9A7N-092016-11-14. Service bulletin. "IF THERE IS A LOSS OF POWER OR IF THE FOLLOWING FAULT CODES ARE STORED IN THE FAULT MEMORY, THE WASTEGATE MUST BE CHECKED FOR SMOOTH OPERATION AND CORROSION: • P0133 (OXYGEN SENSOR UPSTREAM OF CATALYTIC CONVERTER, BANK 1) • P0153 (OXYGEN SENSOR UPSTREAM OF CATALYTIC CONVERTER, BANK 2) • P0234 (BOOST PRESSURE CONTROL LIMIT EXCEEDED) • P0299 (BOOST PRESSURE CONTROL DEVIATION) • P2262 (BOOST PRESSURE TOO LOW) CHECK WASTEGATE ON TURBOCHARGER BANK 1 FOR SMOOTH OPERATION AND CORROSION. • CHECK WASTEGATE ON TURBOCHARGER BANK 2 FOR SMOOTH OPERATION AND CORROSION. • IF THE WASTEGATE SHAFT ON TURBOCHARGER BANK 1 IS STUCK, REPLACE TURBOCHARGER ON BANK 1. • IF THE WASTEGATE SHAFT ON TURBOCHARGER BANK 2 IS STUCK, REPLACE TURBOCHARGER ON BANK 2.
122-Q8P6F-082016-10-03. Service bulletin. THERE MAY BE A DIFFERENCE BETWEEN THE ACTUAL COOLANT TEMPERATURE AND THE PREDICTED TEMPERATURE DUE TO INCORRECT POSITIONING OF THE MAP-CONTROLLED THERMOSTAT DURING THE WARM-UP PHASE ON THE AFFECTED VEHICLES.THE ERROR MESSAGE "FAULT COOLING SYSTEM" WILL THEN BE DISPLAYED IN THE INSTRUMENT CLUSTER AND THE CHECK ENGINE LIGHT WILL COME ON. TO PREVENT THIS FROM HAPPENING, THE DME CONTROL UNIT MUST BE RE-PROGRAMMED WITH AN UPDATED MAP FOR THE THERMOSTAT.