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U0401 Diagnostic Trouble Code Discussion for November 2011

Implausible Data Received From ECM / PCM

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Trouble Ticket Help Requests for DTC U0401
Help Request Posted
2006 Ford Freestyle Limited 3.0L MIL Lamp on VIN: 1FMDK03196
U0401: Invalid Data Recieved from ECM/PCM. Thanks in advance for your help. Vehicle came in with intermittent jerk/buck complaint. Pulled codes - see below. Reset computer and road test - all good, no codes returned. Performed wiggle test on ECM and TCM harness. No problems identified. No signs of wate...
November 09, 2011