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U1900 Diagnostic Trouble Code Discussion for September 2012

CAN System Communication Error

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Trouble Ticket Help Requests for DTC U1900
Help Request Posted
2005 Mazda 3 S 2.3L No Start VIN: JM1BK323X5
U1900: CAN System Communication Error. ... engine with a fresh reman. When i I started the engine it stalled due to a vac line that I missed. After correcting the line when I tried to start it I got nothing . so using an otc scan tool I pulled codes from every system on this car the codes are as fo...
September 19, 2012