U0406high severityNetwork
Invalid Data Received From Fuel Injector Control Module
on 2006 Lexus GS 430 4.3L V8 · RWD
What this code means
The main computer is getting bad or nonsensical data from the fuel injector control module over the network. This can cause fuel delivery problems and driveability issues.
Symptoms
- Rough running or misfire
- Poor fuel economy
- Check engine light on
Common causes
- Faulty fuel injector control module
- Wiring or connector fault on data bus
- Corroded or loose connectors
- Software or programming error
Diagnostic steps
- Scan all modules for stored codes
- Check power and ground to injector control module
- Inspect data bus wiring and connectors
- Test module data with scan tool live data
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Any of these will read and clear this code — pick by how deep you want to go.
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ANCEL AD410 →
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Serious DIY~$100
BlueDriver Pro →
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Autel MaxiCOM MK808S →
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Autel MaxiSys MS906 Pro →
Full-system pro platform — topology mapping, ECU coding, the works.
✓ Autel official store
As an Amazon Associate and Autel/ANCEL partner, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.
Other Network codes on this vehicle
U0001
High Speed CAN Communication Bus
U0002
High Speed CAN Communication Bus Performance
U0003
High Speed CAN Communication Bus (+) Open
U0004
High Speed CAN Communication Bus (+) Low
U0005
High Speed CAN Communication Bus (+) High
U0006
High Speed CAN Communication Bus (-) Open
U0007
High Speed CAN Communication Bus (-) Low
U0008
High Speed CAN Communication Bus (-) High
U0009
High Speed CAN Communication Bus Shorted Together
U0010
Medium Speed CAN Communication Bus