Test Description

WARNING: This page is about a different car, the 1995 Oldsmobile Ninety-Eight and 1995 Buick Park Avenue. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Test numbers refer to numbers on diagnostic chart.

Checks circuit for a short to ground.
Checks for a faulty PCM or an intermittent condition.

Fig 1: Code P1619 Schematic (3.8L) Engine Oil Life Monitor Reset Circuit

Fig 2: Code P1619 Diagnostic Flow Chart (3.8L) Engine Oil Life Monitor Reset Circuit