Powertrain
generic / SAE
P0884
TCM Power Input Signal Intermittent
The TCM detects intermittent loss of main supply voltage above a threshold count. Often caused by loose connector or relay fault.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number8 / 84
Possible causes
- TCM power relay intermittent high
- Power connector loose medium
- Connector with intermittent contact under vibration low
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
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 80–400 €
- Estimated time: 0.5–2.5 h
- Component: tcm
- Component: tcm relay
- Component: wiring harness
- MIL / check engine light
Sources
References
sae:J2012