NHTSA ID Number: 11022205
Manufacturer Communication Number: 2078912/1
TSB/Document Date: 2025-08-28
Summary
DTC U042300 Stored in Gearbox Control Unit After KL30 Reset | Continental
GT/GTC /Flying Spur | 25-26MY. Customer Statement: Yellow gearbox malfunction warning displayed on the Driver’s Instrument Panel (DIP).
Technical Service Bulletin
Topic
DTC U042300 Stored in Gearbox Control Unit After KL30 Reset | Continental GT/GTC
/Flying Spur | 25-26MY
Market area
Bentley: worldwide (2WBE),China 796 VW Import Comp. Ltd (Vico), Beijing (6796)
Brand
Transaction
No.
2078912/1
Level
EH
Status
Released for publishing
Release date Aug 21, 2025
Diagnostic trouble codes
Fault
symptom
Diagnostic address
Diagnostic trouble code
0002 - Transmission
electronics
U042300: Invalid Data Received From Instrument Panel
Cluster Control Module
Storage
state
static
New customer code
Object of complaint
Complaint type
information, navigation, communication, entertainment -> instrument
cluster, displays, screens -> instrument cluster
control modules, services
-> error message
Vehicle data
25-26MY Continental GT/GTC/Flying Spur
Sales types
Type MY
Brand Designation Engine code Gearbox code Final drive code
Z23* 2025 E
*
*
*
Z23* 2026 E
*
*
*
Z24* 2025 E
*
*
*
Z24* 2026 E
*
*
*
Z32* 2025 E
*
*
*
Z32* 2026 E
*
*
*
Documents
Position
Document name
master.xml
Transaction No.:
Technical Service Bulletin
2078912/1
DTC U042300 Stored in Gearbox Control Unit After KL30 Reset | Continental GT/GTC
/Flying Spur | 25-26MY
Release date: Aug
21, 2025
Condition
Customer Statement
Yellow gearbox malfunction warning displayed on the Driver’s Instrument Panel (DIP).
Workshop Findings
The following DTC is stored in the Transmission Electronics (Diagnostic Address 0002):
•
P0C7800 (U042300: Invalid Data Received From Instrument Panel Cluster Control Module– active
/static) with symptom 50285.
Technical Background
This is a temporary communication issue between the Instrument Panel Cluster and the Gearbox Control
Module following a KL30 (battery) reset. It does not indicate a hardware fault and can be resolved by
following the steps outlined in the measure section.
Production Solution
Not applicable
Service
To resolve the issue, follow these steps precisely:
1. Place the vehicle into Drive mode.
2. Start the engine and select Sport mode using the Charisma switch.
3. Drive the vehicle forward approximately 1 metre, then return to stationary and select Reverse.
4. Switch off the vehicle and allow a 15-minute CAN sleep (ensure ignition is off and vehicle is locked).
5. After CAN sleep, erase the fault memory using the diagnostic tool.
6. Confirm that the DTC is no longer present and the gearbox warning is cleared.
Warranty
Warranty Type –
110 or 90
Damage Service Number –
01 50
Damage Code –
00 41
Labour
Labour Operation Code –
01 50 00 03
Time –
10TU
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TSB/Document ID: 2078912/1
Replacement Service Bulletin Number:
MFR Communication Date: 2025-08-21
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: POWER TRAIN
MFR Component System:
MFR Component Subsystem:
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