Notes On Intermittents

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 greater than 105 kPa, condition has been induced and cause of intermittent should be repaired. If wiring and connectors are okay, substitute a known good sensor and re-test.

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: ECM Code E031, Shorted Map Sensor Circuit Schematic

Fig 2: Flow Chart, Code E031, Shorted Map Sensor Circuit