Miele Dishwasher F68 Error Code: Causes and Fixes

The F68 error on your Miele Dishwasher means there is a fault with the pressure switch or water level sensor. This issue typically prevents proper water intake or drainage detection, and you’ll need to check the sensor and its connections.

What the F68 error means

The F68 error indicates a malfunction with the pressure switch or water level sensor in your Miele dishwasher. This sensor monitors the water level inside the dishwasher tub and communicates with the control board to regulate water intake and drainage cycles. When the sensor fails or sends incorrect readings, the dishwasher cannot determine if it has the proper amount of water for safe operation, triggering the F68 error and stopping the cycle.

Common causes

• Faulty or defective pressure switch that no longer reads water levels accurately
• Blocked or kinked pressure hose connecting the sensor to the sump
• Debris or mineral buildup in the pressure chamber obstructing proper readings
• Loose or corroded electrical connections to the pressure switch
• Water damage to the sensor or its wiring harness
• Failed control board not properly communicating with the pressure switch

How to fix the F68 error

1. Power off and access the pressure switch: Disconnect power to the dishwasher at the breaker. Remove the lower front panel or side panels according to your model’s service manual. Locate the pressure switch, typically found on the left side of the base near the sump assembly.
2. Inspect the pressure hose: Check the small rubber or plastic hose connected to the pressure switch for kinks, cracks, or blockages. Remove the hose and blow through it to ensure it’s clear. Check where it connects to the pressure chamber for debris or buildup and clean thoroughly with warm water.
3. Test the pressure switch: Disconnect the wiring harness from the pressure switch. Use a multimeter set to continuity mode to test the switch terminals according to your model’s specifications. The switch should show continuity changes when you gently blow into the pressure port. If it doesn’t respond, the switch is faulty.
4. Check electrical connections: Inspect all wire connections to the pressure switch for corrosion, looseness, or damage. Clean any corroded terminals with electrical contact cleaner and ensure all connections are secure and properly seated.
5. Replace the pressure switch if necessary: If testing confirms the pressure switch is defective, order a genuine Miele replacement part using your model number. Disconnect the old switch, transfer the hose and wiring to the new switch, and secure it in place. Miele pressure switches typically cost $60–$150.
6. Reassemble and test: Reconnect all hoses and wiring, replace panels, and restore power. Run a test cycle to verify the F68 error is resolved and the dishwasher fills and drains properly.

FAQ

Can I reset my Miele dishwasher to clear the F68 error?
You can try resetting by turning off the power at the breaker for 5 minutes, then restoring power. However, the F68 error indicates a genuine hardware fault with the pressure switch system, so a simple reset will only clear the code temporarily if the underlying problem persists.

How much does it cost to repair a Miele dishwasher F68 error?
If you replace the pressure switch yourself, expect to pay $60–$150 for the genuine Miele part. Professional repair typically costs $200–$400 including the service call, labor, and parts. The exact cost depends on your location and whether additional components need replacement.

Is it safe to use my Miele dishwasher with the F68 error showing?
No, you should not attempt to use the dishwasher when the F68 error appears. The pressure switch is a critical safety component that prevents overfilling and ensures proper water levels. Operating without a functioning sensor could lead to flooding, water damage, or additional component failures.