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C1203 Diagnostic Trouble Code Discussion for November 2006

ecm communication circuit malfunction

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Trouble Ticket Help Requests for DTC C1203
Help Request Posted
2001 Toyota Sequoia SR5 4.7L abs light flashes VIN: 5TDBT44A21
C1203: ecm communication circuit malfunction. ... emergency brake light and vcs lights are on during driving and when the car is cold. Found brake fluid level was low so topped it up. Test drove vehicle and ABS light flashes & traction control lights stay on.and code c1203 would any info
November 14, 2006