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U0121 Diagnostic Trouble Code Discussion for November 2010

Lost Communication With EBCM

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Trouble Ticket Help Requests for DTC U0121
Help Request Posted
2008 Mazda 6 i 2.3L MIL Lamp on VIN: 1YVHP80C48
U0121: lost comm with abs Pcm. Able to Comminucate with all modules, TPMS however shows invalid data. Looks to me like the body module is acting as a gateway via the can wiring ?, anyone having issues with these, Have checked data lines and all are fine...too BCM Turning towards the used AB...
November 16, 2010