Transmission fluid life is determined by monitoring transmission fluid temperature over a period of time. The transmission control module (TCM) calculates transmission fluid life based on a set of temperature ranges stored in TCM memory. As the vehicle is driven, a counter increments. The rate at which the counter increments, depends on the temperature range in which the transmission is currently operating. The higher the temperature range, the faster the counter increments. As the counts increment, the TCM will begin to decrease the fluid life percentage from 100, high fluid life, to 0, low fluid life.

The calculated transmission oil life remaining is 10 percent or less.

DTC P0897 is a Type C DTC.

Inspect the transmission cooling system for possible blockage and restrictions.

Schematic Reference

Automatic Transmission Controls Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Transmission General Description

Electrical Information Reference

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Transmission Control Module Scan Tool Information

1. Replace the transmission fluid and filter.
2. Use the scan tool in order to reset the transmission oil life.
3. Ensure the transmission oil life monitor displays 99 percent or greater.

Perform the Diagnostic Repair Verification after completing the repair.

Automatic Transmission Fluid and Filter Replacement