GE Dishwasher C2 Error: Drain Pump Motor Replacement... | appliancefaults.com

Technical Background:

The C2 error code on a GE dishwasher indicates a problem with the drain pump system. The Main Control Unit (MCU) monitors the drain pump motor's current draw. If the MCU detects that the drain pump is not operating correctly, such as drawing too little or no current, it will generate the C2 error code. The MCU sends 120V AC to the drain pump via a relay.

Symptoms:

The GE dishwasher displays error code C2. The dishwasher may also fail to drain completely or make unusual noises during the drain cycle. Water may remain in the bottom of the dishwasher tub after a cycle is complete.

Possible Causes:

Blocked drain hose or air gap
Defective drain pump motor
Faulty drain pump relay on the control board
Clogged dishwasher filter
Obstruction in the sump area
Wiring issues between the control board and the drain pump

Solution:

1

Disconnect power to the dishwasher at the breaker panel.
2

Inspect the drain hose for kinks or clogs. Disconnect the hose and clear any obstructions.
3

Check the dishwasher filter and sump area for food particles or debris. Clean thoroughly.
4

Access the drain pump (typically located at the bottom of the dishwasher). Use a 1/4-inch nut driver to remove any access panels.
5

Disconnect the wiring harness from the drain pump motor. Use a multimeter to test the drain pump motor windings for continuity. A reading of OL (open loop) indicates a faulty motor.
6

If the motor is faulty, replace it with a new GE drain pump motor. Reconnect the wiring harness.
7

Restore power to the dishwasher and run a test cycle to verify proper draining. Check for leaks.

Safety Warning:

Always disconnect power to the dishwasher at the breaker panel before performing any repairs. Lock Out/Tag Out (LOTO) procedures should be followed to prevent accidental re-energizing of the circuit. Be aware of potential electrical shock hazards when working with electrical components. The dishwasher operates on 120V AC.

Prevention:

Regularly clean the dishwasher filter to prevent clogs. Avoid overloading the dishwasher with food debris. Periodically check the drain hose for kinks or obstructions. Consider using a dishwasher cleaner to remove buildup in the drain pump and sump area.

Expert Tip:

Enter service mode by pressing and holding the Start button for 5 seconds, then press the Up arrow button 3 times. This will allow you to manually activate the drain pump for testing purposes.

Frequently Asked Questions

•How do I access the drain pump on my specific GE dishwasher model?

The drain pump is typically located at the bottom of the dishwasher. You may need to remove the lower access panel or kick plate using a 1/4-inch nut driver to access it. Refer to your dishwasher's service manual or online resources for specific instructions for your model.

•What is the proper resistance reading for a functioning GE drain pump motor?

A functioning GE drain pump motor typically has a resistance reading between 10 and 40 ohms. An open circuit (OL) indicates a faulty motor. Consult the service manual for your exact model to verify the correct specification. Always disconnect power before testing resistance.

•Could a faulty control board cause the C2 error code even if the drain pump motor is good?

Yes, a faulty drain pump relay on the control board can prevent the motor from receiving power. Use a multimeter to check for 120V AC at the drain pump connector when the dishwasher is supposed to be draining. If there is no voltage, the control board may be faulty.

GE Dishwasher C2 Error: Drain Pump Motor Replacement Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I access the drain pump on my specific GE dishwasher model?

•What is the proper resistance reading for a functioning GE drain pump motor?

•Could a faulty control board cause the C2 error code even if the drain pump motor is good?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: