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U0401 Diagnostic Trouble Code Discussion for January 2009

Implausible Data Received From ECM / PCM

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Trouble Ticket Help Requests for DTC U0401
Help Request Posted
2005 Ford Freestyle Limited 3.0L Hesitation, Cuts out, Stall, MIL Lamp on VIN: 1FMDK06185
U0401: Invalid data receivied from eng/pcm. ... This Freestyle came into the shop two weeks ago with a concern of SES lamp on, message of "Fail Safe Mode" and engine had no power. Custermor said that this had happened three times in last six months. It was not acting up when in the shop but the ...
January 29, 2009