Samsung · Dishwasher Moderate

PC — Zone Wash diverter malfunction

On models with Zone Wash, the diverter motor that routes water to upper/lower/zone spray arms isn't operating correctly. Wash performance suffers.

Keep using it?
Yes, with caution
DIY difficulty
Moderate
Verified against
samsung.com ↗

How to fix it

  1. Power off at the breaker for 5 minutes and try again.
  2. Pull the filter and inspect the sump for debris that could jam the diverter.
  3. If recurring, pull the dishwasher and access the diverter motor under the tub.
  4. Test motor windings and inspect wiring connector.
  5. Replace the diverter motor assembly if windings are open or it's mechanically seized.

Why it happens

Typical signs: PC on display · Only top or only bottom rack getting clean · Cycle longer than normal · Diverter clicking but not changing zones

  • Failed diverter motor Stepper or DC motor stalled or open winding.
  • Debris jamming diverter disc Particles past the filter stalling the diverter.
  • Wiring fault to diverter Harness pinched at the sump area.
  • Failed position sensor Hall sensor not reporting diverter position.

Parts you may need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

  • Samsung dishwasher diverter motor Common replacement
    Amazon →

Related repair guides

Dishwasher Not Cleaning Dishes Well — How to Fix It →

More Samsung dishwasher codes

1C 1C — Low water level / fails to start 1E 1E / IE — Filter clogged / heater fault 3C 3C Error — Wash Pump Failure 3E 3E — Hot water supply too hot 4C 4C / 4E — Water Supply Error 4C5 4C5 / 4E5 — Fill timeout with dry tub

All Samsung codes → All dishwasher codes →

Frequently asked questions

What does the PC code mean on a Samsung dishwasher?

On models with Zone Wash, the diverter motor that routes water to upper/lower/zone spray arms isn't operating correctly. Wash performance suffers.

What causes the PC code on a Samsung dishwasher?

Failed diverter motor: Stepper or DC motor stalled or open winding. Debris jamming diverter disc: Particles past the filter stalling the diverter. Wiring fault to diverter: Harness pinched at the sump area.

Is it safe to keep using a Samsung dishwasher with a PC error?

Yes, with caution. This is rated a moderate-severity fault.

How do I fix PC on a Samsung dishwasher?

Power off at the breaker for 5 minutes and try again. Pull the filter and inspect the sump for debris that could jam the diverter. If recurring, pull the dishwasher and access the diverter motor under the tub.

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: samsung.com.