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B1121 Diagnostic Trouble Code Discussion for September 2012

overvoltage


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Trouble Ticket Help Requests for DTC B1121
Help Request Posted
2002 Mercedes-Benz C240 2.6L no communication VIN: WDBRF61J12
B1121: overvoltage. I have no communication with the ME-SFI but I have communication with all other modules. Car runs and drives great. I have checked the resistance on plug #4 pins 1 and 11 it had 125 Ohms I also checked the resistance of the CAN it has 119 Ohms both in spec. I ...
September 28, 2012
2002 Mercedes-Benz C240 2.6L no communication VIN: WDBRF61J12
B1121: overvoltage. I have no communication with the ME-SFI but I have communication with all other modules. Car runs and drives great. I have checked the resistance on plug #4 pins 1 and 11 it had 125 Ohms I also checked the resistance of the CAN it has 119 Ohms both in spec. I ...
September 28, 2012