P0892
TCM Power Relay Sense Circuit Intermittent
The sense feedback from the TCM power relay drops out intermittently. Loose connector or oxidised relay contact.
- 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.
- Connector not seatedCommon
- Relay contact oxidisedPossible
- Connector with intermittent contact under vibrationLess likely
Parts involved
- TCM Power Relay
- Wiring Harness
- TCM
P0892 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.