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U0121 Diagnostic Trouble Code Discussion for October 2012

Lost Communication With EBCM

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Trouble Ticket Help Requests for DTC U0121
Help Request Posted
2008 Honda Fit Sport 1.5L D light flashes VIN: JHMGD38678
U0121: loss communication from ABS control module. ... intermittently has the D (for drive) light flashing. Scan for dtc's and have a U0121 come up. I have been through the diagnosis 3 times. Every time leads me to try a known good PCM. The PCM has been updated to the latest calibration (by me, which I have ch...
October 09, 2012