Switch Pack – Enable Switch Circuit — Signal Stuck Low
Land Rover · body
Data confidence95%
The L405 Deployable Side Step ECU detected switch pack – enable switch circuit with failure type 23, signal stuck low. This interpretation is limited to the documented DSS controller.
Recommended checks
Perform a full module scan
Verify battery voltage
Inspect DSS wiring and connectors
Inspect the running-board mechanism for binding
Check the Hall-effect sensor signal when applicable
Follow the Land Rover DSS troubleshooting guide
Applies toRange Rover L405 2013 model yearDeployable Side Step (DSS) ECU
Manufacturer-defined range: the meaning can differ between brands.
001
Specific fault index within the subsystem.
Frequently asked questions about U1001
What does U1001 mean?
Diagnostic Trouble Code (2 interpretations). The L405 Deployable Side Step ECU detected switch pack – enable switch circuit with failure type 23, signal stuck low. This interpretation is limited to the documented DSS controller.
Is U1001 generic or manufacturer-specific?
U1001 is a manufacturer-specific code. In this database it is documented for: Land Rover, Nissan. The same number can mean something different on other brands.
Can TuningBot remove U1001 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 U1001 is removable in your case.
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