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2002 LEXUS GS 430
4.3L V8•RWD•AUTOMATIC•gas
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Repairs0Labor478Torque3074Fluid8DTC967Battery1Maintenance0Recalls0
U1006moderate severityNetwork

CAN Bus Message Timeout

on 2002 Lexus GS 430 4.3L V8 · RWD

What this code means

A required CAN bus message was not received within the expected time window, indicating a module is too slow to respond.

Symptoms

  • Intermittent system faults
  • Delayed responses from systems
  • Warning lights that come and go
  • Periodic feature dropouts

Common causes

  • Module processor overloaded
  • CAN bus high traffic load
  • Intermittent wiring connection
  • Module firmware bug
  • Power supply voltage drop to module

Diagnostic steps

  1. Monitor CAN bus load percentage
  2. Check module software version for updates
  3. Test module power supply stability
  4. Check for intermittent wiring connections
  5. Scope CAN bus timing

Repair notes

Update module software if available. Check power supply stability and wiring connections.

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