Technical product information
DTC P0B2500 logged within address 0021 (Battery Energy Control Module 2) - Dynamic ride system warning visible
Australia E04 Bentley rest Asia and Australia (6E04),China 723 Volkswagen (Anhui) Automotive CO (6723),China 796 VW Import
Comp. Ltd (Vico), Beijing (6796),Germany E02 Bentley rest Europe (6E02),Japan E03 Bentley Japan (6E03),Korea, (South) E08
Bentley South Korea (6E08),United Arab Emirates E06 Bentley Middle East and Africa (6E06),United Kingdom E01 Bentley UK
(6E01),United States E05 Bentley USA and rest America (6E05)
Bentley

Topic
Market
area

Brand
Transaction
2068946/6
No.
Level
EH
Status
Approval
Release
date
Event memory entries

Diagnostic address
Event memory entry
Fault type Fault status
0021 - Battery management 2 P0B2500: Hybrid/EV Battery "A" Voltage Low
static
0021 - Battery management 2 P0B2500: Hybrid/EV Battery "A" Voltage Low
Intermittent
New customer code
Object of complaint
running gear -> shock absorber/suspension control -> roll compensation
running gear -> adaptive suspension, pitch and roll compensation
information, navigation, communication, entertainment -> symbolic control indicators -> warning lamp
for electronic stabilisation programme (ESC)

Vehicle data
Bentayga/New Continental GT/C and New Flying Spur
Sales types
Type
3S3*
3S3*
3S3*
3S3*
3S3*
3S3*
3S3*
3S4*
3S4*
3S4*
3S4*
3S4*
3S4*
4V14A9
4V14A9
4V14A9
4V14A9
4V14A9
4V14B9
4V14B9
4V14B9
4V14C9
4V14C9
4V14C9

INTERNAL

MY
2018
2019
2020
2021
2022
2023
2024
2019
2020
2021
2022
2023
2024
2017
2018
2019
2020
2021
2018
2019
2020
2018
2019
2020

Brand Designation Engine code Gearbox code Final drive code
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
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E
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E
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E
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E
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E
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E
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E
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E
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E
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E
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E
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E
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E
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E
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E
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E
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*
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E
*
*
*
E
*
*
*

Complaint type
functionality -> defective
function sequence
functionality
functionality -> activates

Position

4V14D9
4V14D9
4V14D9
4V14D9
4V14D9
4V14D9
4V14D9
4V14G9
4V14G9
4V14G9
4V14G9
ZG21BB
ZG21BB
ZG21BB
ZG21BB
ZG21BB
ZG24CB
ZG24CB
ZG26BB
ZG26BB
ZV1*
ZV1*

2018
2019
2020
2021
2022
2023
2024
2020
2021
2022
2023
2020
2021
2022
2023
2024
2023
2024
2023
2024
2023
2024

E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E

Documents
name

INTERNAL

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*
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*
*
*
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*
*
*
*
*

visible

Customer statement / workshop findings
Customer statement:
Bentley dynamic ride system fault is displayed within the Drivers Instrument Panel (DIP)
Workshop findings:
DTC P0B2500 - Hybrid/EV Battery "A" Voltage low is stored within address 21- Battery Energy Control Module 2

Technical background
Possible internal fault with the super capacitor
•

In the event that DTC P0B2500 is evident the operative must follow the steps within the Measure section to completion
NOTICE

The instructions within the Measure section must be conducted to completion regardless of vehicle status (PDI or post vehicle handover) Do Not
erase the DTC and handover the vehicle back to the customer as DTC P0B2500 could return
Revision history - 2068946/6
•

Header data amended

Production change
Not applicable

Measure
WARNING

1) Referring to Rep.Gr 27 - Deactivate the 48 volt system - Refer to 48 volt system - To activate and deactivate
2) Referring to Rep.Gr 27 - Check the security of the super capacitor positive and negative terminals (Figure 1) as follows:
•

Remove the caps (A) from the terminals

•

Check the security of the positive and negative terminals (B) are as described within Rep.Gr 27

•

In the event that one or both terminals are not secure the operative must secure the loose terminal(s) to the correct torque as detailed
within Rep.Gr 27 - Super capacitor
NOTICE

INTERNAL

Figure 1
3) Referring to Figure 2 - Check the security of the harness connector
•

In the event the harness connector is not secure the operative must secure the connector
NOTICE

Figure 2
4) Referring to Rep.Gr 27 - Activate the 48 volt system. Refer to 48 volt system - To activate and deactivate
5) In the event the super capacitor positive and / or negative terminals were found not to be secured to the correct torque specification
and required securing the operative must conduct step 6 and steps 7
However
In the event the super capacitor positive and / or negative terminals were found to be secured to the correct torque specification please
go directly to step 7
6) Conduct a short road test
NOTICE

INTERNAL

7) Read the following MVB’s to check the difference between the highest cell voltage and the lowest cell voltage (Figure 3)
21-Battery Energy Control Module 2 -→ MVB -→ IDE08217 and IDE8218

Figure 3
•

If there is a difference of 0.5v or more between the highest cell voltage and lowest cell voltage and the fault code ‘P0B2500:
Hybrid/EV Battery "A" Voltage low' is stored in address 21-Battery Energy Control Module 2 - Referring to the applicable
Rep.Gr 27 - Replace the super capacitor

Warranty accounting instructions
Warranty type 110 or 910
Damage service number 93 03
Damage code 00 40

Bentayga
De-energise and re-energise the 48 volt system (Step 1)
93 10 00 00 - 30 TU
Time to conduct steps 2,3,4,5 and 7
93 50 19 00 - 20 TU
Diagnosis time
01 50 00 00 as per ODIS log (Must not exceed - 10 TU)
Time to conduct a short road test (Step 6)
Labour Operation Code 01 21 00 01 - 30 TU
NOTICE

New Flying Spur and New Continental GT and GTC
De-energise and re-energise the 48 volt system (Step 1 and 4)
93 10 00 00 - 30 TU
Time to conduct steps 2,3,5 and 7
93 50 19 00 - 40 TU
Diagnosis time
01 50 00 00 as per ODIS log (Must not exceed - 10 TU)
Time to conduct a short road test (Step 6)
Labour Operation Code 01 21 00 01 - 30 TU
NOTICE

INTERNAL

Parts information
Refer to the ETKA parts catalogue

INTERNAL