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U0100 Diagnostic Trouble Code Discussion for April 2009

Lost Communication With ECM

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Trouble Ticket Help Requests for DTC U0100
Help Request Posted
2005 Mazda 6 S 3.0L MIL Lamp on, Communication VIN: 1YVFP80DX5
U0100: Communication Error To PCM. ... diag. sessions I was excited to get a communications diagnose but now I'm not so sure how fun they are. The dash is lit up like a Christmas tree (AT,MIL,ABS,TC on) We have a 2005 Mazda6 3.0L here with a communication problem also no speed on dash (which al...
April 06, 2009
2005 Ford F-250 Super Duty King Ranch 6.0L MIL Lamp on VIN: 1FTSW21P35
U0100: Lost Communication With ECM / PCM. This truck was towed in, loss of power and the instrunment panel would not work, After we get it we find it was struck by lightening and this problem was never found or fixed. Truck will start and the RPM, fuel, temp gauges do not work oil pressure will work, ...
April 16, 2009