Notes On Intermittent

WARNING: This page is about a different car, the 1988 Cadillac Seville and 1988 Cadillac Eldorado. However, it is still accessible from the selected car via links, so may be relevant.

Code EO32 can be set by an open 5-volt reference signal between ECM and sensor, an open MAP signal between sensor and ECM, or a defective MAP sensor.

Manipulate affected wiring and connectors while observing ECM parameter ED02. Apply and release vacuum to MAP sensor vacuum port using a vacuum source. If ECM parameter ED02 displays less than 17 kPa, condition has been induced and cause of intermittent can be repaired. If wiring and connectors are okay, substitute a known good sensor and retest.

Review snapshot data parameters stored with this code to verify failure. If failure is verified, check and repair intermittent wiring connection or sensor.

Fig 1: Schematic, Code EO32, Open MAP Sensor Circuit

Fig 2: Flow Chart, Code EO32, Open MAP Sensor Circuit

NOTE: If a hard code EO32 is accompanied by a hard code EO22, see DFI Chart A, "Multiple ECM Codes Stored Hard".

Fig 3: Flow Chart, Code EO32, Open MAP Sensor Circuit