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U0073 Diagnostic Trouble Code Discussion for June 2011

Control Module Communication Bus Off


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Trouble Ticket Help Requests for DTC U0073
Help Request Posted
2007 Chevrolet Tahoe LT 5.3L No Start VIN: 1GNEK13067
U0073: High Speed Communication Bus. Hi, we have a Tahoe here that has turned into a real problem child! Our customer went to start it one day & it wouldn't crank so they tried to jump it. Still no crank! They then had it towed to our local Chevy dealer because they thought they had some warr...
June 07, 2011
2004 Mazda 6 S 3.0L Excessive Emissions, Poor Idle Quality, Hesitation, Cuts out, Stall, MIL Lamp on VIN: 1YVHPB1D34
U0073: CAN Communication System Error. ... 2004 Mazda6 V6 5speed sedan. Was lucky to have another good running car to reference - still not much luck. Had car for a while now. Should have posted something sooner. After warm up (10-15min) Car has bad hesitation which gradually turns to no power (giv...
June 30, 2011
2007 Chevrolet Tahoe LT 5.3L No Start VIN: 1GNEK13067
U0073: High Speed Communication Bus. Hi, we have a Tahoe here that has turned into a real problem child! Our customer went to start it one day & it wouldn't crank so they tried to jump it. Still no crank! They then had it towed to our local Chevy dealer because they thought they had some warr...
June 07, 2011
2004 Mazda 6 S 3.0L Excessive Emissions, Poor Idle Quality, Hesitation, Cuts out, Stall, MIL Lamp on VIN: 1YVHPB1D34
U0073: CAN Communication System Error. ... 2004 Mazda6 V6 5speed sedan. Was lucky to have another good running car to reference - still not much luck. Had car for a while now. Should have posted something sooner. After warm up (10-15min) Car has bad hesitation which gradually turns to no power (giv...
June 30, 2011