OBD-II code · Powertrain (generic, extended)
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.
Is it safe to drive with P28E4?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyMotor stalled - high stall current
- PossibleShort between motor phases
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
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 2–8 h
- Emissions test
- Usually unaffected
- Parts involved
- Shift Motor, Shift Motor Position Sensor, Tcm
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.