9

Bulletin #: 2104.4

Advanced Technical Information

Part ID: 9981

Y1A Taycan
On Board Charger (OBC) Fault P31D200 “Charging Socket – Overtemperature”
Vehicles Affected
Models

Model Year

Model Type

VIN Range

Vehicle-Specific Equipment

Taycan

As of 2020 up to 2022

Y1A

N/A

N/A

Revision History
Revision

Release Date

Changes

0

April 5, 2021

Original document

1

October 13, 2021

Extension of Model Year

2

January 24, 2022

Extension of equipment affected

3

May 13, 2022

Update of Technical Background and
Service Information

4

July 25, 2022

Update of Service Information

Condition
The customer reports that the vehicle
intermittently stops charging while using the
Porsche Mobile Charger Connect or Porsche
Mobile Charger Plus and associated cables.
The workshop is able to confirm this condition
using the customer’s charging hardware, and
the OnBoard Charger (OBC) has stored fault
code P31D200 DTC E1140x “Charging socket
– overtemperature”.

Figure 1

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Bulletin #: 2104.4

Advanced Technical Information

Part ID: 9981

9

Technical Background
The vehicle cable charge handle, pins, and conductors can reach high temperatures while charging. The OBC will
stop charging if the NTC temperature sensor in either charge port reads ≥ 90°C for >14 seconds.

Service Information
Obtain the vehicle cable used by the customer. In the case of
the Mobile Charger Connect, the vehicle cable is a disconnectable 2.5 m or 7.5 m vehicle cable. In the case of the Mobile
Charger Plus, a 4.5 m vehicle cable is permanently integrated
into the Mobile Charger Plus control unit.
Visually inspect the pins in the vehicle cable connector for signs
of overheating, paying particular attention to the L1 Pin.
A vehicle cable and L1 Pin which was significantly or repeatedly
overheated will show signs of discoloration (refer to Figure 3).
If no discernible discoloration is seen in the vehicle cable
connector pins, then further diagnosis is recommended to verify
the condition of the charging cable.

Figure 2

Ask the customer if they are regularly charging at one particular
charge port (driver’s side or passenger’s side), and focus testing
on the side most used by the customer.
Measure temperatures around the vehicle cable after at least
1 hour of full-power AC charging (208-240V, 40A setting).
Check the temperature of the cable sheath below the vehicle
connector, at the vehicle cable handle, and at the charge port of
the vehicle. Compare the measured temperatures to another
known-good charging cable used in similar conditions and with
similar settings.

Figure 3

Vehicle cables which have been severely or repeatedly overheated may lead to a stopped charging session without
the OBC storing Fault Code P31D200. If no damage is visually apparent, and the fault code cannot be duplicated
through testing, then it will be necessary to verify the problem follows the vehicle cable itself. Check if high
temperatures at the vehicle cable charge handle and/or a stopped charging session follows the vehicle cable by
charging another vehicle using the same hardware.

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Bulletin #: 2104.4

Advanced Technical Information

Part ID: 9981

9

Please advise customers to reduce charging current to maximum 30A (Mobile Charger Connect) or
50% (Mobile Charger Plus).
This topic remains under investigation. This document will be updated with additional information when available.

Warranty
with Mobile Charger Connect
Cause location:
9981C Vehicle connecting cable
Cause symptom:
4011 Loose contact, contact fault
with Mobile Charger Plus
Cause location:
9981G Mobile Charger Plus
Cause symptom:
4011 Loose contact, contact fault

Search Items
Mobile charger connect, PMCC, Mobile charger plus, PMCP, PMC+, EVSE, charger, on board charger, OBC, socket,
temperature, P31D200

Important Notice: Technical Bulletins issued by Porsche Cars North America, Inc. are intended only for use by professional automotive technicians who have attended Porsche service training courses. They are
written to inform those technicians of conditions that may occur on some Porsche vehicles, or to provide information that could assist in the proper servicing of a vehicle. Porsche special tools may be necessary in
order to perform certain operations identified in these bulletins. Use of tools and procedures other than those Porsche recommends in these bulletins may be detrimental to the safe operation of your vehicle, and
may endanger the people working on it. Properly trained Porsche technicians have the equipment, tools, safety instructions, and know-how to do the job properly and safely. Part numbers listed in these bulletins
are for reference only. The work procedures updated electronically in the Porsche PIWIS diagnostic and testing device take precedence and, in the event of a discrepancy, the work procedures in the PIWIS Tester
are the ones that must be followed.

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©2022 Porsche Cars North America, Inc.

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