Powertrain
generic / SAE
P28E4
Shift Motor Driver Current/Temperature Too High
The output driver for the shift motor reports current or junction temperature above its protection threshold. Sustained high load or short-circuit fault.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number8 / E4
Possible causes
- Motor stalled - high stall current high
- Short between motor phases 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: hard
- DIY: shop recommended
- Estimated cost: 400–2200 €
- Estimated time: 2–8 h
- Component: shift motor
- Component: shift motor position sensor
- Component: tcm
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012