Unable to authenticate serial-data message
Chevrolet · network
Data confidence99%
The cited OEM bulletin documents U1962 for Chevrolet in the stated vehicle and controller context. It identifies unable to authenticate serial-data message; the bulletin-specific condition must not be generalized to other platforms or modules.
Symptoms
DTC and MIL may remain set after a communications fault resolves
permanent status may cause an emissions I/M test failure
Recommended checks
Perform a full module scan
Verify battery voltage
Check module power supplies and grounds
Inspect network wiring and connectors
Measure network resistance with power isolated
Check applicable OEM service information
Applies to2024 Chevrolet Corvette Z06 coupe|affected VINs onlyEngine Control Module (ECM)
Manufacturer-defined range: the meaning can differ between brands.
962
Specific fault index within the subsystem.
Frequently asked questions about U1962
What does U1962 mean?
Unable to authenticate serial-data message. The cited OEM bulletin documents U1962 for Chevrolet in the stated vehicle and controller context. It identifies unable to authenticate serial-data message; the bulletin-specific condition must not be generalized to other platforms or modules.
Is U1962 generic or manufacturer-specific?
U1962 is a manufacturer-specific code. In this database it is documented for: Chevrolet. The same number can mean something different on other brands.
Can TuningBot remove U1962 at file level?
Not guaranteed. Powertrain (P) codes can be reliably disabled in the ECU calibration, but body, chassis and network codes depend on the specific control unit and how the fault is implemented - some can be handled, some cannot. Ask for a quote and our engineers will check your file and tell you, free of charge, whether U1962 is removable in your case.
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