Technical Service Bulletin
Topic

Auxiliary Coolant Pump Control Circuit Low - DTC P26F500 | Continental GT/GTC & Flying
Spur V8 Kovomo | 24MY

Market area

Korea, (South) E08 Bentley South Korea (6E08),United States E05 Bentley USA and rest
America (6E05)

Brand

Bentley

Transaction
No.

2078799/1

Level

EH

Status

Released for publishing

Release
date

Sep 16, 2025

Diagnostic trouble codes

Diagnostic address

Diagnostic trouble code

Fault symptom Storage state

0001 - Engine electronics P26F500: Coolant Pump "C" Control Circuit Low
New customer code

Object of complaint

Complaint type Position

engine -> cooling, lubrication functionality

Vehicle data
24MY Continental GT/GTC & Flying Spur V8 Kovomo
Sales types

Type

MY

Brand Designation Engine code Gearbox code Final drive code

3S32* 2024 E

*

*

*

3S34* 2024 E

*

*

*

3S42* 2024 E

*

*

*

3S44* 2024 E

*

*

*

ZG22* 2024 E

*

*

*

ZG24* 2024 E

*

*

*

Documents

Intermittent

Document name
master.xml

Technical Service Bulletin
Auxiliary Coolant Pump Control Circuit Low - DTC P26F500 | Continental GT/GTC &
Flying Spur V8 Kovomo | 24MY

Transaction No.:

2078799/1
Release date: Sep
16, 2025

Condition
Customer Statement
Engine MIL Light on Driver’s Instrument Panel (DIP)

Workshop Findings
The following DTC is stored in the Engine Electronics (diagnostic address 0001):
•

P26F500 (Coolant Pump "C" Control Circuit Low)

Technical Background
DTC P26F500: Coolant Pump "C" Control Circuit Low can bring a MIL on
The DTC logs due to an erroneous signal from the auxiliary coolant pump for heating
The signal is due to an over-sensitivity of the pump’s internal diagnostics
The part number affected is 971.121.601.A
The pump, engine and HVAC operations are not affected by this erroneous signal.

Please refer to the measure section for further instructions on how to rectify this issue

Production Solution
-

Service
1. Check the connectors and wiring to the pump for corrosion or damage, and confirm there is no coolant
ingress.
a. If there are signs of coolant ingress, raise a full technical DISS query and await further instructions
before proceeding

2. Confirm the part number of the pump fitted to the car
a. If the pump fitted to the car is 971 121 601 A, proceed to step 3
b. If the pump fitted to the car is 06D 121 601, raise a full technical DISS query and await further
instructions before proceeding

3. Replace the coolant pump as per ElsaPro instructions. Referring to Rep. Gr 19 - Auxiliary coolant pump
for heating (V488) – To remove and fit

4. Carry out a coolant system bleed once replaced as per ElsaPro instructions. Referring to Rep. Gr 19 –
Draining and filling coolant

Warranty
Warranty Type

110 or 910

Damage Service Number

19 38

Damage Code

00 10

Time to drain and fill the coolant
Labour Operation Code

19 38 17 00

Time

150 TU

Time to remove and install the auxiliary cooling pump
Labour Operation Code

19 47 19 03

Time

80 TU

Required Parts and Tools
Refer to ETKA parts catalogue