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U0001 Diagnostic Trouble Code Discussion for January 2009

CAN 'C' Bus

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Trouble Ticket Help Requests for DTC U0001
Help Request Posted
2004 Cadillac CTS 3.2L MIL Lamp on, will not run evap . VIN: 1G6DM57714
U0001: Lost Communication With XXX Control Module. ... and evap large leak code. Replacement of o2 sensor repaired o2 code. Fuel system was lowered down and leak diagnostics performed with "smoke machine". We were unable to locate any leak. Reassembled fuel system and now we are unable to get the Evap ...
January 28, 2009