Powertrain
generic / SAE
P0880
TCM Power Input Signal
The TCM detects an out-of-range supply voltage at its main power input. Battery voltage is too low or too high during operation.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number8 / 80
Possible causes
- Low battery or alternator fault high
- Poor TCM ground medium
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: 100–800 €
- Estimated time: 0.5–3 h
- Component: tcm
- Component: battery
- Component: alternator
- Component: wiring harness
- MIL / check engine light
Sources
References
sae:J2012