SB-03-0450V2

ASTON MARTIN CLIENT SERVICES
SERVICE BULLETIN
Reference number:
SB-03-0450V2
Issued: 10 January, 2019
Subject:
V12 Secondary Air Injection System Codes P0492 P0491
Model(s):
DB11 V12, DBS Superleggera
VIN Range:
All
Applicable to:
All Dealers
Distribute to:
After Sales Manager
Service Manager
Warranty Staff
Technician(s)
Parts Staff
Reason for this Service Bulletin
There can be problems related to the Secondary Air Injection (SAI) system. If you find a fault with the SAI system, please
do the checks that follow:
Workshop Procedure
Notes: For more information about procedures that follow, please refer to the Workshop Manual for the
applicable vehicle.
This Service Bulletin is for additional information only. Further diagnosis may be required.
For SAI system operation, refer to Description and Operation section 03-08 in Workshop Information.
1.
Complete Workshop Manual procedure 00.06.AD AMDS Operation Check (Check).
2.
Do a check for Diagnostic Trouble Codes (DTCs).
• If you find only DTC P0492 (ECM2, AIR System Insufficient Flow Bank 2), do Step 3.
• If you find DTCs P0491 (ECM1, AIR System Insufficient Flow Bank 1) and P0492 (ECM2, AIR System
Insufficient Flow Bank 2), do Step 4.
3. P0492 Only
We have found a problem with the SAI pump to SAI
control valve pipe. In some incidents, the pipe has
split at the elbow for the sensor. (Refer to Figure 1).
To do a check for leaks, attach a smoke leak tester
to the pipe on the SAI pump side.
Figure 1
10 January, 2019
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SERVICE BULLETIN
4.
SB-03-0450V2
P0491 and P0492
It is possible that the vacuum pipes for the SAI
control valve are not correctly attached. This can
cause failure of the SAI control valve operation. In
these incidents, make sure that all of the vacuum
connections shown in Figure 2 are correctly
attached.
Figure 2
5.
Complete an ePDR. Give this bulletin number as reference and submit it to DCS. Aston Martin Technical Services
can request return of the related parts under the warranty process for analysis.
Failure Mode Description
Select the failure modes that follow when you make a claim through the warranty system:
Subsystem
Location
Component
Mode of Failure
POWERTRAIN
ENGINE - BASE
ENGINE - SECONDARY
AIR INJECTION - PIPE
(VACUUM)
INOPERATIVE - NOT
CONNECTED
POWERTRAIN
ENGINE - BASE
ENGINE - SECONDARY
AIR INJECTION - PIPE
LEAKING - DAMAGED
If you have any questions related to this Service Bulletin, please contact: Aston Martin Technical Services
on: +44 (0) 1926 644720, email: [email protected],
Or contact your After Sales Manager.
The English version of this Service Bulletin is written in
Simplified Technical English to ASD-STE100™.
10 January, 2019
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