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VW U1401 Code – ABS/ESP Module Signal Unexpected
Limited
Safe to drive :
VW vehicles only
Applies only to :
Not applicable to :
This explanation does NOT apply to Audi, BMW, or other brands.
Medium
Severity level :
When Does This Code Appear on the Vehicles
VW U1401 often occurs after module replacement or coding changes.
What This Code means on the Vehicles
Gateway module reports unexpected ABS/ESP signals.
Why This is different from a generic OBD2 Code
Standard OBD-II cannot detect these sub-module communication codes.
Common Situations That Trigger This Code
Improper module coding; Wiring faults; ABS module failure.
What Will NOT Fix This Code
Replacing unrelated modules; Ignoring wiring faults.
How to Clear This Code on Vehicles
Verify coding, inspect wiring, clear via VCDS/OEM tool.
Related Manufacturer Specific Codes
VW U1400; VW U1402
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