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GM U1202 Code – Sensor/Module Timeout
Limited
Safe to drive :
GM 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
GM U1202 appears when BCM detects data timeout from sensors or modules.
What This Code means on the Vehicles
Sensor/module timeout on Class 2 network, GM-specific.
Why This is different from a generic OBD2 Code
Not visible on standard OBD-II scanners.
Common Situations That Trigger This Code
Wiring harness issues; Faulty sensors; BCM failure.
What Will NOT Fix This Code
Ignoring timeout; Replacing unrelated components.
How to Clear This Code on Vehicles
Check wiring, sensor, and BCM; clear via OEM/Tech2.
Related Manufacturer Specific Codes
GM U1200; GM U1201
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