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GM U1200 Code – Sensor Data Lost
Limited
Safe to drive :
GM vehicles only
Applies only to :
Not applicable to :
This explanation does NOT apply to other manufacturers.
Medium
Severity level :
When Does This Code Appear on the Vehicles
GM U1200 appears when BCM detects loss of sensor data on Class 2 network.
What This Code means on the Vehicles
Sensor data missing or corrupted, reported to gateway module.
Why This is different from a generic OBD2 Code
Generic OBD-II cannot identify sensor-specific Class 2 communication issues.
Common Situations That Trigger This Code
Faulty sensor; Wiring damage; BCM software error.
What Will NOT Fix This Code
Replacing unrelated components.
How to Clear This Code on Vehicles
Diagnose sensor and BCM; clear code using OEM/Tech2.
Related Manufacturer Specific Codes
GM U1201; GM U1202
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