Viking Dishwasher Error 1-2
⚡ Quick Answer: The Viking Dishwasher error code 1-2 indicates simultaneous water inlet and drainage issues. The dishwasher may fail to fill properly due to a water s... ✅ DIY Fixable
What Does Error 1-2 Mean?
The Viking Dishwasher error code 1-2 indicates simultaneous water inlet and drainage issues. The dishwasher may fail to fill properly due to a water supply problem and may also struggle to drain effectively. Symptoms include a humming sound and cycles that stop early or fail to start. Troubleshooting involves checking the water supply valve and inspecting hoses for blockages or kinks.
Common Symptoms:
- Dishwasher unable to fill sufficiently with water (related to code 1)
- Dishwasher unable to drain properly (related to code 2)
- Cycles stopping early or not starting due to fault detection
Possible Causes
- Water inlet/fill problem (associated with code 1) (medium)
- Drainage problem (associated with code 2) (medium)
How to Fix Error 1-2
DIY Fix Check water supply and drainage
- Ensure the dishwasher’s water supply valve is fully open.
- Inspect the water inlet hose for kinks, pinches, or blockages.
- Check the drain hose for clogs or kinks that could prevent water from exiting.
- If connected to a garbage disposal, run the disposal to clear any potential blockage.
Technician Only Inspect and test inlet and drain components
- Perform continuity and function testing on the water inlet valve.
- Inspect and test the drain pump for mechanical and electrical operation.
- Check float switch and water level sensing components for correct operation.
- Evaluate control board for correct fault code interpretation.
Parts needed: Water inlet valve, Drain pump, Hoses and fittings, Float switch
- If you cannot identify a clear blockage or supply issue
- If checking basic hoses and valves does not clear the error
- If multiple error codes persist after basic troubleshooting
Next step
Choose the next step for 1-2
Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.
Most relevant component to inspect
Water Inlet Valve
Controls the flow of hot and cold water into the appliance.
- Typical part-only price
- $25 - $60
- DIY difficulty
- Easy
- Estimated time
- 15-30 mins
Where can I find the model number?
Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.
Verify the complete model and part number on the retailer's compatibility page before ordering.
Other parts options
Check related components first; use model search as a fallback.
Drain Pump
Pumps waste water out of the appliance during the drain cycle.
Float Switch
Detects the maximum water level to prevent overflow and potential flooding.
Model-compatible Dishwasher parts
Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. We may earn a commission from other qualifying purchases or service requests made through links on this page, at no additional cost to you. Recommendations are based on repair relevance, not commission rate.
Optional routine care
Maintenance supplies
These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.
Dishwasher Cleaner and Descaler
Supports routine removal of mineral scale, grease, and odor. It is maintenance, not a repair for a failed pump, valve, or control.
Braided Dishwasher Inlet Hose
For replacement of an externally damaged supply hose. Verify connection size, length, and appliance installation requirements before ordering.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.
Technical Specifications
| note | The previous model-independent part specification was removed. Verify the full model number and diagnosis in the manufacturer's official parts catalog before ordering. |
|---|---|
| part_number | None |
Common Questions
What does 1-2 error mean on Viking Dishwasher?
Error 1-2 indicates issues with both water filling and draining, causing cycles to stop.
Can I fix Viking Dishwasher 1-2 error myself?
Yes, check the water supply valve and inspect hoses for clogs or kinks.
How much does it cost to fix 1-2 error?
Repair costs range from $150 to $450 depending on parts and labor.
When should I call a technician for 1-2?
Call a technician if basic troubleshooting doesn't resolve the error or if multiple codes persist.
Sources & References
Data last verified: 2026-07-31
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