GE GDT645SYNFS Repair Guide
GE’s top control mid liner with Dry Boost and steam prewash, fine filter design with display codes.
GE GDT645SYNFS is a dishwasher, top control, dry boost dishwasher sold 2019 to present. Its most common repair is not draining, usually $0 to $300.
- 4 common problems with causes, fixes and costs below.
- 3 error codes decoded.
- A dishwasher like this lasts about 9 to 12 years.
- Check the model and serial tag before you order any part.
Common problems & typical repair costs
| Problem | Likely cause | Typical fix | OEM part # | Typical cost |
|---|---|---|---|---|
| Not draining | Filter/pump | Clean. Replace | not listed | $0 to $300 |
| H2O code | Fill problem, supply/valve | Check tap. Valve | not listed | $0 to $250 |
| Not drying | Rinse aid or vent fan | Fill aid. Replace vent | not listed | $0 to $230 |
| Leak detected | Base moisture | Find source | not listed | $100 to $350 |
Costs are national averages for professional repair (parts + labor). See the linked cost guides below for full breakdowns.
Error codes
| Code | What it means |
|---|---|
| H2O | Fill |
| PrS | Pressure sensor |
| LEAK | Base moisture |
Tech notes
Fine filter = monthly rinse. Dry Boost still benefits from rinse aid, the two are additive, not alternatives.
Cost guides for this machine’s common repairs
DIY step by step instructions for this model
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