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U0100 Diagnostic Trouble Code Discussion for March 2015

Lost Communication With ECM


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Trouble Ticket Help Requests for DTC U0100
Help Request Posted
2006 Dodge Ram 1500 ST 3.7L No Start, Wont crank VIN: 1D7HA16K76
U0100: No communication w/ecm. Howdy Y'all, This 2006 Dodge Ram 1500 v6 was towed in as wont crank, Customer wanted to replace starter. He had replaced battery. I was able to jump the solenoid on starter and would crank still no start. No codes and NO COMMUNICATION W ecm or tcm. When I test...
March 16, 2015
2006 Dodge Ram 1500 ST 3.7L No Start, Wont crank VIN: 1D7HA16K76
U0100: No communication w/ecm. Howdy Y'all, This 2006 Dodge Ram 1500 v6 was towed in as wont crank, Customer wanted to replace starter. He had replaced battery. I was able to jump the solenoid on starter and would crank still no start. No codes and NO COMMUNICATION W ecm or tcm. When I test...
March 17, 2015
2006 Land Rover Range Rover Sport HSE 4.4L No Start VIN: SALSF25456
U0100: Lost Communication with TCM. Well this one has me stumped. It came in on a flatbed as a no-crank no-start. With ignition on, all warning lights are on, red PARK BRAKE and Adaptive headlamp icon both flashing. The park brake does have a broken cable so I can account for that. Temp gauge re...
March 19, 2015
2005 Chrysler 300 Limited 3.5L No Start VIN: 2C3JA53G25
U0100: Lost Communication With ECM/PCM. Car came in from a used car lot. An auction car. Never ran. No crank and No start. Based on the codes found, we replaced the ignition switch. When you turn the ignition switch to the run position the dash lights come to life and then after about 10 seconds the...
March 26, 2015