No. 2202

2
Bulletin #: 2202
Advanced Technical Information
Part ID: 2797
2021 E-Hybrid OBC Fault U112100 DTC D1211D “Data bus - missing message”
Vehicles Affected
Models
Model Year
Model Type
VIN Range
Vehicle-Specific Equipment
Cayenne
2021
E-Hybrid and Turbo S E-Hybrid,
All Variants
N/A
KB2 - 7.2 kW On-board Charger
Panamera
2021
E-Hybrid and Turbo S E-Hybrid,
All Variants
N/A
KB2 - 7.2 kW On-board Charger
Revision History
Revision
Release Date
Changes
0
February 16, 2022
Original document
Condition
The customer reports the Check Engine Light (CEL) / Malfunction Indicator Light (MIL) is illuminated following HV 		
Battery charging. The 7.2 kW On-Board Charger (OBC) has stored Fault Code U112100, DTC D1211D “Data bus –
missing message” (Figure 1).
Figure 1
AfterSales
February 16, 2022
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Bulletin #: 2202
Advanced Technical Information
Part ID: 2797
2
Technical Background
This software synchronization error currently exists only in the 7.2 kW OBC with software version 1177 found in the
affected vehicles. If no other fault codes or issues are identified in the vehicle, then this fault can be erased to reset 		
the MIL.
Service Information
This software synchronization error currently exists only in the 7.2 kW OBC with software version 1177 found in the
affected vehicles. If no other fault codes or issues are identified in the vehicle, then this fault can be erased to reset
the MIL.
If the OBC has also stored Fault Code B200000 DTC E11C11 “Function Restriction”, then please refer to Advanced
Technical Information (ATI) #2203, “E-Hybrid OBC Fault B200000 DTC E11C11 “Function restriction” for instruc-		
tion specific to that fault code.
Warranty
Please document customer complaint cases and attach vehicle analysis logs to corresponding complaint lines in
PCSS/PQIS.
Cause location:		
Cause symptom:
27970 High-voltage charger
1134 Programming Error
Search Items
E-hybrid, Cayenne, Panamera, OBC, U112100, data bus, missing message, D1211D
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.
6000013931, 6000012198
©2022 Porsche Cars North America, Inc.
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February 16, 2022
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