P1619

Code P1619, Engine Oil Life Monitor Reset Circuit:

Engine Oil Life Monitor Reset Circuit:

CIRCUIT DESCRIPTION
To determine the engine oil life remaining, the PCM monitors engine coolant temperature, the number of crankshaft revolutions, vehicle speed, engine speed, and calculated oil temperature. When the PCM determines that the engine oil is near the end of its useful life, it will command the cluster via serial data (CKT 800) to illuminate the "Change Oil Soon" indicator or "Change Oil Soon/Now" message after startup. The PCM will command the "Change Oil Soon" indicator or "Change Oil Soon/Now" message "ON" after each startup until the engine oil life monitor is reset by grounding CKT 1379 through the oil life monitor reset switch for over 5 seconds.

DTC 1619 WILL SET WHEN:
^ CKT 1379 is grounded for over 60 seconds.


ACTION TAKEN (PCM will default to):
DTC P1619 does not illuminate the MIL (Service Engine Soon).

TEST DESCRIPTION
Number(s) below refer to circled number(s) on the diagnostic chart.
1. Checks CKT 1379 for a short to ground.
2. Checks for a faulty PCM or an intermittent condition.