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Home >> Oldsmobile >> 1986 >> Toronado >> Repair and Diagnosis >> Engine Performance >> System >> BCM System, Part II >> ECM Trouble Code Charts - Trouble Shooting >> Code B337, Loss Of HVAC Programmer Data (Riviera) >> Note On INTERMITTENTS:
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Note On INTERMITTENTS:

If only Code B337 shows up as "History", check for momentary opens in circuits 800F and 800E, or momentary loss of both ignition 3 (circuit 750), or momentary loss of ground (circuit 801M).

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

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