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Home >> Buick >> 1986 >> Riviera Base >> Repair and Diagnosis >> Engine Performance >> System >> BCM System, Part II >> ECM Trouble Code Charts - Trouble Shooting >> Code B336, Loss Of IPC Serial Data (Riviera) >> Note On INTERMITTENTS:

Note On INTERMITTENTS:

If only Code B336 shows up as "History", check for momentary opens in circuits 800H and 800G, or momentary loss of both 12-volt circuits (812GA and 812GB), or momentary loss of ground (circuit 801H).

If Code B336 is set as "History", along with any of the following codes set as "History"; B334, B335, B337, B552, B553 and/or EO47, see MULTIPLE INTERMITTENT CODES chart.

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