P28E4
Shift Motor Driver Current/Temperature Too High
P28E4 is an OBD-II diagnostic trouble code meaning: Shift Motor Driver Current/Temperature Too High. Common causes: shift motor malfunction, short circuit or open circuit in shift motor wiring. Estimated repair cost: $28–167.
Symptoms
- Difficulty shifting gears
- Inability to change gears
- Jerks when shifting gears
- Enabling transmission emergency mode
- Check Engine Light Is On
Causes
- Shift motor malfunction
- Short circuit or open circuit in shift motor wiring
- Transmission control unit (TCU) malfunction
- Transmission overheating
- Low or contaminated transmission fluid
How to Fix
- Check the level and condition of the transmission fluid
- Check the shift motor wiring and connectors for damage.
- Check the shift motor for proper operation
- Check the transmission control unit (TCU) for malfunctions
- Replace faulty components (shift motor, wiring, TCU)
Related codes
Error P28E4 by Vehicle Brand
FAQ
What does the P28E4 code mean?
P28E4 is an OBD-II diagnostic trouble code that indicates: Shift Motor Driver Current/Temperature Too High
What causes a P28E4 error code?
The most common causes of P28E4 include: Shift motor malfunction; Short circuit or open circuit in shift motor wiring; Transmission control unit (TCU) malfunction; Transmission overheating.
How do I fix a P28E4 diagnostic trouble code?
To fix P28E4: Check the level and condition of the transmission fluid. Check the shift motor wiring and connectors for damage.. Check the shift motor for proper operation. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P28E4?
Yes, but get it checked soon
How much does it cost to fix P28E4?
The estimated repair cost for P28E4 is $28–167. Actual cost depends on your vehicle, location, and labor rates.
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