Note On Intermittents:

If an intermittent Code B334 is being set, manipulate the related wiring at the ECM and up to splice "A". With the ignition key on (engine not running), a "Low Oil Pressure" message will indicate loss of ECM communication and possibly help to isolate the intermittent without having to look for the code.

Fig 1: Code B334, Loss of ECM Serial Data (Toronado)

Fig 2: Code B334, Schematic