Whirlpool dishwasher 1-2: control: software issue
1-2 means the main control detected a problem in its own memory or software, so it cannot trust its own programming.
What 1-2 means
- Brand
- Whirlpool
- Appliance
- Dishwasher
- Code
- 1-2
- Documented meaning
- Control: software issue
- Applies to
- 184 Whirlpool models on 12 platforms
- Can you keep using it?
- With caution
What the dishwasher is detecting
The control checks its stored program and settings when it powers up and while running. Corrupted memory, or software parts inside the control that do not match each other, sets this code.
Causes listed for this condition
In the order the service documentation checks them. Documented causes come from the manufacturer's service documentation for these platforms; possible causes are based on how the system works; unconfirmed marks common assumptions that the documentation does not support.
- Documented Damaged or corrupted memory on the main control.
- Documented Software components inside the control that are not compatible with each other.
- Possible A power surge or brief outage while the control was writing to memory.
Safe checks you can make
- Switch off the dishwasher's circuit breaker (or unplug it, if it plugs in under the sink) for one minute, restore power and run a short cycle to see whether the code returns.
- Note whether the code comes back right after a power reset or only after some cycles; that detail helps the technician.
Further diagnosis requires opening the appliance. Beyond the owner checks, diagnosis involves removing panels, testing components and checking wiring. We describe what a technician investigates, not how to do it yourself.
What a technician checks
- Confirms the code repeats after a full power reset.
- Verifies the correct control for the model before replacing it.
Typical repairs and cost
Depending on what diagnosis finds, this code can lead to one of these repairs:
| Repair | Typical range | Labor |
|---|---|---|
| Dishwasher main control board replacement | $260–$590 | Moderate |
Typical total ranges for the Las Vegas area, parts and labor included. The final cost depends on diagnosis, the exact model, parts availability and whether other damage is found.
Can you keep using it?
Use with caution. If the code clears after a power reset and the dishwasher runs normally, it can be used while you watch it. If it returns, have the control checked.
Whirlpool models documented with this code
- WDF120PAFB
- WDF120PAFS
- WDF120PAFT
- WDF120PAFW
- WDF121PAFB
- WDF121PAFW
- WDF130PAHT
- WDF131PAHB
- WDF131PAHW
- WDF310PCAB
- WDF310PCAD
- WDF310PCAS
- WDF310PCAT
- WDF310PCAW
- WDF330PAHB
- WDF330PAHD
And 168 more. Use the model lookup to check yours.
Related problems and codes
Other codes documented on the same Whirlpool platforms:
Repair or replace?
A fault code alone rarely justifies replacing a dishwasher. Most 1-2 repairs involve a single component once diagnosed. Replacement becomes worth considering when the unit is near the end of its typical 9–12-year life and the diagnosed repair is a major one. See the repair-or-replace guide.
Need 1-2 diagnosed in the Las Vegas area?
We repair Whirlpool, Maytag, KitchenAid, JennAir, Amana and other Whirlpool-family appliances in Las Vegas, Henderson, Summerlin and Boulder City. A model number helps but is never required to book.