U1006moderate severityNetwork
CAN Bus Message Timeout
on 1999 Chrysler LHS 3.5L V6 · FWD
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
- Monitor CAN bus load percentage
- Check module software version for updates
- Test module power supply stability
- Check for intermittent wiring connections
- Scope CAN bus timing
Repair notes
Update module software if available. Check power supply stability and wiring connections.
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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