P0897
Transmission Fluid Deteriorated
The TCM detects deteriorated transmission fluid based on temperature exposure history or sensor measurement. Fluid change recommended.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: easy
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Common causes
Ordered by how often each turns out to be the cause.
- Service interval overdueCommon
- Repeated thermal stressPossible
Parts involved
- Transmission Fluid
P0897 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.