P0893
Multiple Gears Engaged
The TCM detects that more than one gear element is engaged simultaneously. Risk of transmission lock-up - severe internal fault.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
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.
- Valve body failure - solenoids stuckCommon
- TCM logic errorPossible
Parts involved
- Transmission
- Valve Body
- TCM
P0893 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.