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U1000 Diagnostic Trouble Code Discussion for January 2007

Class 2 Communication Malfunction


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Trouble Ticket Help Requests for DTC U1000
Help Request Posted
2003 Nissan Sentra SE-R 2.5L MIL Lamp on VIN: 3N1AB51D73
U1000: Controller Area Network Line Malfunction. ... any help. This 03 spec-v came in not able to communicate to a scanner or an inspection machine, but i could talk to the srs system. There are post every where about the foam in the computer storage box screwing up the computer. So i called the local dealer...
January 08, 2007
2003 Chevrolet Malibu 3.1L No Start VIN: 1G1ND52J63
U1000: Class 2 Communication Malfunction. ... and it started right away. Checked basics, fuel and tune appear good at this time. Called customer, he tried to start if for some time. Even had it jumped to keep trying. He says it cranked fine but did not start. I have a U1000 code that does not go away....
January 12, 2007
2000 Buick Regal LS 3.8L No Start, Cuts out, MIL Lamp on VIN: 2G4WB55KXY
U1000: communication problem. Came in as a no start.Turn key it started with foot on gas.Iac was inop.ECM was not controlling IAC.Now it starts and runs BUT when you use turn signals it dies and won't re-start for a couple of minutes,won't even crank.When it does run runs well but shifter ...
January 16, 2007
2004 Pontiac Grand Am SE1 3.4L No Start, extended crank VIN: 1G2NF52E34
U1000: Class 2 Communication Malfunction. ... extended crank time when starting the car. This seems to happen under all conditions (hot, cold, etc). One time the car would only crank and not start (she said the theft light was NOT flashing), but when she tried it later and it started, the MIL and Trac...
January 16, 2007
2003 Nissan Sentra SE-R 2.5L MIL Lamp on VIN: 3N1AB51D73
U1000: Controller Area Network Line Malfunction. ... any help. This 03 spec-v came in not able to communicate to a scanner or an inspection machine, but i could talk to the srs system. There are post every where about the foam in the computer storage box screwing up the computer. So i called the local dealer...
January 08, 2007
2003 Chevrolet Malibu 3.1L No Start VIN: 1G1ND52J63
U1000: Class 2 Communication Malfunction. ... and it started right away. Checked basics, fuel and tune appear good at this time. Called customer, he tried to start if for some time. Even had it jumped to keep trying. He says it cranked fine but did not start. I have a U1000 code that does not go away....
January 12, 2007
2000 Buick Regal LS 3.8L No Start, Cuts out, MIL Lamp on VIN: 2G4WB55KXY
U1000: communication problem. Came in as a no start.Turn key it started with foot on gas.Iac was inop.ECM was not controlling IAC.Now it starts and runs BUT when you use turn signals it dies and won't re-start for a couple of minutes,won't even crank.When it does run runs well but shifter ...
January 16, 2007
2004 Pontiac Grand Am SE1 3.4L No Start, extended crank VIN: 1G2NF52E34
U1000: Class 2 Communication Malfunction. ... extended crank time when starting the car. This seems to happen under all conditions (hot, cold, etc). One time the car would only crank and not start (she said the theft light was NOT flashing), but when she tried it later and it started, the MIL and Trac...
January 16, 2007