Invalid Data Received from ECM/PCM A — No Sub Type Information
Ford · network
Data confidence96%
The Ford Explorer PSCM detected invalid data received from ecm/pcm a with failure type 00, no sub type information. This interpretation is specific to the documented EPAS controller and model years.
Recommended checks
Perform a full module scan
Verify battery voltage and PSCM power supplies
Inspect EPAS wiring and connectors
Review PSCM snapshot and extended data
Follow the Ford EPAS diagnostic procedure
Applies toFord Explorer 2011-2012Power Steering Control Module (PSCM)|Electric Power Assisted Steering (EPAS)
Generic SAE-standard code: same meaning on every make.
401
Specific fault index within the subsystem.
Frequently asked questions about U0401
What does U0401 mean?
Invalid data received - engine control module (ECM). The control module registered the fault condition described as "Invalid data received - engine control module (ECM)".
Is U0401 generic or manufacturer-specific?
U0401 exists both as a generic OBD-II code (same meaning on every make) and with 1 manufacturer-specific interpretation(s): Ford. Always read it in the context of your vehicle.
Can TuningBot remove U0401 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 U0401 is removable in your case.
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