Note On INTERMITTENTS

WARNING: This page is about a different car, the 1992 Oldsmobile Toronado. However, it is still accessible from the selected car via links, so may be relevant.

If an intermittent Code B334 is being set, manipulate related wiring at PCM. With ignition on (engine not running), a LOW OIL PRESSURE message will indicate loss of PCM communication and possibly help isolate intermittent without having to look for code. Also check PCM and MEM-CAL connections.

Fig 1: Code B334, Schematic, Loss of ECM Data

Courtesy of GENERAL MOTORS CORP.

Fig 2: Code B334, Flow Chart, Loss of ECM Data

Courtesy of GENERAL MOTORS CORP.