# Service bulletin 122\-X4D4A\-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: 10127502
- Published by NHTSA: 2018\-01\-29
- Manufacturer's number: 122\-X4D4A\-09
- Manufacturer's date: 2016\-08\-08
- NHTSA component: POWER TRAIN; ELECTRICAL SYSTEM

## NHTSA's summary

The unwarranted errormessages "Hybrid system fault" and "Reduced engine power" can appear sporadically in the instrument cluster on the affected vehicles under certain driving conditions because the diagnostic function for the hybrid decoupler is too sensitive. If this happens, engine power will be reduced and the Check Engine light will be activated until the ignition is switched off and on again.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2016/MC-10127502-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2016/MC-10127502-0001.pdf)

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

## Components

Electrical system, Transmission and driveline

## Vehicles listed

- 2016 PORSCHE PANAMERA
- 2014 to 2015 PORSCHE PANAMERA S E\-HYBRID

## Recalls for the same vehicles and component

- [2019290](/recalls/tc/2019290.md), 2019-06-12: Powertrain
- [19V446000](/recalls/nhtsa/19V446000.md), 2019-06-12: POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION \(PRNDL\)
- [2019200](/recalls/tc/2019200.md), 2019-04-25: Electrical
- [19V322000](/recalls/nhtsa/19V322000.md), 2019-04-24: ELECTRICAL SYSTEM

## Other bulletins for the same vehicles and component

- [No. 28\-26](/bulletins/11037816.md), 2026-10-02, Service bulletin: POWER TRAIN; ENGINE. Manufacturer's Certificate for Overview of Approved Porsche C40 Engine Oils. Note that this bulletin covers all models back to model year 1984, for which C40 engine oils are allocated.
- [No. 27\-26](/bulletins/11037813.md), 2026-10-02, Service bulletin: POWER TRAIN; ENGINE. Manufacturer's Certificate for Overview of Approved Porsche C20 Engine Oils. Note that the bulletin covers all models back to model year 1984, for which C20 engine oils are allocated.
- [No. 26\-26](/bulletins/11037812.md), 2026-10-02, Service bulletin: ENGINE; POWER TRAIN. Manufacturer's Certificate for Overview of Approved Porsche C30 Engine Oils. Note that the bulletin includes all models back to model year 1984, for which C30 engine oils are allocated.
- [No. 25\-26](/bulletins/11037808.md), 2026-10-02, Service bulletin: POWER TRAIN; ENGINE. Manufacturer's Certificate for Overview of Approved Porsche A40 Engine Oils. Note that this bulletin covers all vehicles from model year 1997 to 2020, for which A40 engine oils are assigned. Model years 1997\-2001 are not available for selection in the system.
- [No. 12\-26](/bulletins/11037795.md), 2026-10-02, Service bulletin: ELECTRICAL SYSTEM. Technical Information for Damage to Nano Plug Contacts Due to Utilization of Incorrect Measuring Equipment
- [18/26](/bulletins/11035922.md), 2026-08-06, Warranty extension: POWER TRAIN. Warranty Information: Warranty Extension for Transmission Electronics Control Unit \(18/26\)
- [GR13D790](/bulletins/11034838.md), 2026-07-08, Other: ELECTRICAL SYSTEM; ENGINE. Parts Withdrawal \- Various Parts
- [09/26 3730](/bulletins/11034782.md), 2026-07-07, Service bulletin: POWER TRAIN. Permanent Fault Memory Entries “P1775”/“P071400”/“P184900” in Transmission Electronics Control Unit \(PDK\) \(09/26\)
- [No. TLLI2602](/bulletins/11033656.md), 2026-06-05, Service bulletin: UNKNOWN OR OTHER; ELECTRICAL SYSTEM. Tech live look information bulletin for How to use Frontline.io on the HoloLens 2
- [No. TLLI2601](/bulletins/11033655.md), 2026-06-05, Service bulletin: ELECTRICAL SYSTEM; UNKNOWN OR OTHER. Tech live look information bulletin for how to use fronline.io on mobile devices and tablets.

JSON: [/v1/bulletins/10127502](/v1/bulletins/10127502)

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