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ErrBase

Frigidaire Dishwasher I40 Error Code: Water Supply Fault

Quick Answer

I40 on a Frigidaire dishwasher is a water fill fault. Like all fill-related codes across brands, the fix almost always starts with the simplest check: is the supply valve under the sink fully open? After that, check for a kinked inlet hose.

I40 on a Frigidaire dishwasher is a water fill fault. Like all fill-related codes across brands, the fix almost always starts with the simplest check: is the supply valve under the sink fully open? After that, check for a kinked inlet hose. If the supply is confirmed good, test the inlet valve solenoid. On Frigidaire models, the inlet valve is part 807046701. If the solenoid winding is out of range or reads OL, the valve has failed and needs replacement.

FrigidaireDishwasherSeverity: moderate86% DIY Success
Time to Fix
20–55 min
Difficulty
beginner
Parts Cost
$22 – $38
Tools Needed
Multimeter, Adjustable wrench

What Does the I40 Code Mean?

I40 is a water fill fault. Check supply valve under the sink first, then inlet hose for kinks. Test inlet valve solenoid. Replace 807046701 if out of spec.

Most Likely Causes

Based on aggregated repair data, here is the probability breakdown for this error code:

Water supply valve under sink partially or fully closed40%
Inlet hose kinked at rear of unit24%
Inlet valve solenoid winding failure14%
Low household water pressure12%
Inlet valve screen clogged with mineral scale10%

Symptoms You May Notice

  • I40 displayed after cycle starts
  • Tub has little or no water when door is opened
  • Cycle aborts at fill stage
  • Fill valve may be audible but little to no water enters

Can you reset a Frigidaire dishwasher to clear the I40 code?

After correcting the supply issue or replacing the valve, unplug for 60 seconds and restart. Run a full cycle to confirm the tub fills properly and I40 does not return.

Tools Required for Diagnosis

MultimeterAdjustable wrenchFlathead screwdriver

Diagnostic Checklist

Follow these steps in order. We start with the easiest external fixes before opening up the machine.

1

Open the cabinet under the sink and locate the dishwasher supply valve

Open the cabinet under the sink and locate the dishwasher supply valve. Turn it counterclockwise to the fully open position. Also run the kitchen faucet briefly to confirm normal household water pressure.

2

Check the inlet hose routing from the supply valve to the rear

3

Disconnect power and shut off water

Replacement Parts

If your diagnostic testing proves the component has failed, you will need a replacement. We recommend OEM parts over aftermarket for water-handling components.

Part Name
Water Inlet Valve807046701 · $22–$38

Repair vs. Replace Calculator

Appliance Age (Years)7 Yrs
Labor Approach
Our Verdict
REPAIR
Estimated Cost: $30 (Parts) vs $600 (New Machine)

Frequently Asked Questions

Is I40 the same as I20 on Frigidaire dishwashers?
No. I20 is a drain fault - water could not leave the tub. I40 is a fill fault - water could not enter the tub. They affect opposite sides of the water circuit and require completely different diagnostics and parts.
Can hard water cause Frigidaire I40?
Yes. Over time, mineral scale from hard water narrows the inlet screen at the valve body. If the solenoid tests good but flow is restricted, remove the inlet hose from the valve and inspect or replace the screen filter inside the valve inlet port.

Related Frigidaire Dishwasher Error Codes

Code: I30Frigidaire Dishwasher I30 Error Code: Leak DetectedCode: I20Frigidaire Dishwasher I20 Error Code: Drain FaultCode: E20Frigidaire Dishwasher E20 Error Code: Pump Fault

Same Fix Works on These Brands

Frigidaire shares the same hardware platform with these brands. The diagnosis and repair steps are identical.

Electrolux washerElectrolux Washer Error Codes: Complete EFLS Front-Load GuideElectrolux washerElectrolux Washer E11 Error Code: Water Not Filling in TimeElectrolux washerElectrolux Washer E21 Error Code: Drain TimeoutElectrolux washerElectrolux Washer E13 Error Code: Water Leak DetectedElectrolux washerElectrolux Washer E35 Error Code: Water Level Sensor FaultElectrolux washerElectrolux Washer E41 Error Code: Door Lock Fault

Models Known to Experience I40 Errors

This repair applies to most Frigidaire dishwashers with this error code. Common model numbers include:

FFCD2413US, FFCD2418US, FGID2479SF, FGID2466QB, FFID2426TS

Last verified for technical accuracy on March 14, 2026