P28E5Shift Motor Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- P28E5 judges the shift motor by its result: it is driven, but the actuator does not get to the commanded range as expected. Hyundai lists it in bulletin 22-AT-001H for the shift-by-wire Palisade, Santa Fe, Sonata and Tucson (including hybrids) with two failure types: P28E577, commanded position not reached, and P28E592, SBW motor performance. The bulletin tells technicians to watch the motor feedback current in the SCU data while pressing a shift button; a brief current means the SCU drives the actuator, no current points to the SCU or its wiring. It also compares target and actual lever positions to separate actuator from shifter faults. A Denso patent shows the motor being stopped at a target encoder count, which is the check this code relies on.
- What you may notice
- Shifter system malfunction message in the cluster
- Range not engaged or engaged with delay
- Wrong gear display
- Likely causes
- LikelySBW actuator worn internally or mechanism stiff
- PossibleShift control unit or its harness not delivering motor current
- PossibleLow 12 V supply during the shift
- RareShift control software needing an update
- Repair
- Hard · Usually a job for a workshop.Typical cost: €100 – €1,600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.