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Toyota U1402 Code – CAN Bus Timeout
Limited
Safe to drive :
Toyota vehicles only
Applies only to :
Not applicable to :
This explanation does NOT apply to other brands.
Medium
Severity level :
When Does This Code Appear on the Vehicles
Toyota U1402 occurs when CAN bus modules timeout on communication.
What This Code means on the Vehicles
Timeout between body control module and other modules, Toyota-specific.
Why This is different from a generic OBD2 Code
Generic OBD-II scanners cannot detect OEM module timeouts.
Common Situations That Trigger This Code
Wiring harness damage; BCM failure; Network congestion.
What Will NOT Fix This Code
Ignoring timeout; Replacing unrelated modules.
How to Clear This Code on Vehicles
Inspect wiring and BCM; clear via Techstream.
Related Manufacturer Specific Codes
Toyota U1400; Toyota U1401
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