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U0100 Diagnostic Trouble Code Discussion for January 2014

Lost Communication With ECM


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Trouble Ticket Help Requests for DTC U0100
Help Request Posted
2005 Chrysler 300 2.7L No Start VIN: 2C3JA43R45
U0100: Lost Communication With ECM/PCM. This car came to me as a no crank no start. We started with the basics, spark and fuel. Could not do compression test because engine would not crank. Car had no spark no fuel pressure and no injector pulse. The reason for this was that the pcm was not groundin...
January 17, 2014
2008 Chevrolet Impala LS 3.5L MIL Lamp on VIN: 2G1WB58K58
U0100: loss comunication with ecm. This car will set these three codes sometimes.May be several days before it will happen. It looks like i have a bad wire or module but am not able to get it to act up while testing it.is there anything common i should look for that i may be missing.checked wir...
January 21, 2014
2005 Chrysler 300 2.7L No Start VIN: 2C3JA43R45
U0100: Lost Communication With ECM/PCM. This car came to me as a no crank no start. We started with the basics, spark and fuel. Could not do compression test because engine would not crank. Car had no spark no fuel pressure and no injector pulse. The reason for this was that the pcm was not groundin...
January 17, 2014
2008 Chevrolet Impala LS 3.5L MIL Lamp on VIN: 2G1WB58K58
U0100: loss comunication with ecm. This car will set these three codes sometimes.May be several days before it will happen. It looks like i have a bad wire or module but am not able to get it to act up while testing it.is there anything common i should look for that i may be missing.checked wir...
January 21, 2014
2005 Chrysler 300 2.7L No Start VIN: 2C3JA43R45
U0100: Lost Communication With ECM/PCM. This car came to me as a no crank no start. We started with the basics, spark and fuel. Could not do compression test because engine would not crank. Car had no spark no fuel pressure and no injector pulse. The reason for this was that the pcm was not groundin...
January 17, 2014
2008 Chevrolet Impala LS 3.5L MIL Lamp on VIN: 2G1WB58K58
U0100: loss comunication with ecm. This car will set these three codes sometimes.May be several days before it will happen. It looks like i have a bad wire or module but am not able to get it to act up while testing it.is there anything common i should look for that i may be missing.checked wir...
January 21, 2014