NHTSA ID Number: 11032669
Manufacturer Communication Number: 37738.1.1
TSB/Document Date: 2026-05-14
Summary
Closed without distribution1.0 - wrong Model type 245 in this version 1.1 version corrected to 246 This is a TJ Text only If a customer experiences a Propulsion Warning message or Turtle light in the DIM, and DTC IGM-P06B800 and/or IEM-P06B800 is stored, please follow the advice in "Service". The described symptoms can result from a third-party device (e.g. insurance company device or GPS tracking device) connected to the DLC/OBD2 connector.
Volvo
Car USA LLC
Technical Journal
Technical Journal Title
Ref. No.
Aftermarket Device Connected to the DLC / OBD2 with IGM / IEM
P06B800
TJ 37738.1.1
Issuer (Dept.)
Issue Date
Status Date
4/2/26
4/3/26
Technical Service
Car Market
Partner
Function Group
United States and Canada
3 US 7510 Volvo Car USA
3233
Function Description
Page
Electric converter, high voltage
Page 1 of 2
Rows beginning with * are modified
Note! If using a printed copy of this Technical Journal, first check for the latest online version.
DESCRIPTION:
*Corrected Vehicle Type error
If a customer experiences a Propulsion Warning message or Turtle light in the DIM, and DTC IGMP06B800 and/or IEM-P06B800 is stored, please follow the advice in “Service”.
CSC Customer Symptom Codes
Code
Description
7G
Text window and warning symbol/Yellow symbol and text message
EA
Text window and warning symbol/Red symbol and text message
DL
Warning lights and chimes/Malfunction Indicator Light ("Check engine" light) indication/no indication
DTC Diagnostic Trouble Codes
Control Module
Code
Fault Type
IGM
P06B800
Permanent
IGM
P06B800
Intermittent
IEM
P06B800
Permanent
IEM
P06B800
Intermittent
Vehicle Type
Type
Eng
Eng
Desc
246
H6
BH6PHEV
256
H6
BH6PHEV
Sales
Body
Gear
Steer
Chassis
range
Struc Week
Range
2022-2099
-
202147-209952
2022-2099
-
202147-209952
Model Year
Plant
Technical Journal 37738.1.1
SERVICE:
The described symptoms can result from a third-party device (e.g. insurance company device or
GPS tracking device) connected to the DLC/OBD2 connector.
Third-party devices can be connected:
1. Directly to the DLC
2. Via a Y-splitter harness that is used as an extension of the regular DLC port, while the regular
DLC port itself may be unoccupied. Y-splitter harnesses are often spliced into the under-dash
wiring but can be connected anywhere else in the vehicle wiring, making them difficult to detect.
Before starting fault-tracing, ensure all third-party devices are disconnected from the car.
Take the following scenarios into account during fault tracing:
1. If the above-mentioned symptoms and the DTC persist, the third-party device might be hidden
well.
2. If the symptoms and the DTC are not permanent, the customer might have had a third-party
device connected while experiencing above-mentioned symptoms but removed it before arriving
at the workshop.
Note: Volvo Cars takes no responsibility for the consequences of connecting unauthorized
equipment to the DLC. The socket should only be used by a trained and qualified Volvo service
technician. Any diagnostics or repairs due to an aftermarket accessory are NOT a matter for
warranty.
List of abbreviations:
TJ - Technical Journal
DIM - Driver Information Module
DLC - Data Link Connector (a physical connector for on-board diagnostics)
DTC - Diagnostic Trouble Code
IGM - Inverter Generator Module
OBD2 - On Board Diagnostics 2nd generation (a data transmission standard)
Warranty claim info:
No warranty claim is accepted for this TJ.
VEHICLE REPORT:
N/A
Page 2 of 2
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TSB/Document ID: 37738.1.1
Replacement Service Bulletin Number:
MFR Communication Date: 2026-04-07
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: UNKNOWN OR OTHER
MFR Component System:
MFR Component Subsystem:
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