C1 and C2 Error Codes, then Leaking

ApplianceGeneral Electric Dishwasher

ModelGSD4930X73WW

Level of DifficultyA Bit Difficult

Time to do repairMore than 2 hours

Age of ApplianceMore than 10 years

Tools Pliers
Screw drivers

Robert From Tustin, CA

Dec 27, 2012

Dishwasher kept displaying error code C1 (drain partly blocked) and occasionally C2 (Drain completely blocked). The drain was fine. Parts Select said symptom "not draining" needed a check valve. Installed that (old one was very worn), but that didn't help. I decided to take off the bottom panel and eyeball the situation. Discovered a leak from the drain valve. But I also discovered the reason for the error codes. The leak had rusted the actuator in the drain valve solenoid so that it couldn't move reliably. So when drain time came, the drain valve didn't open, resulting in a C1 or C2 error (the washer electronics thought the drain was blocked--and in a way it was. I got the replacement parts for the leaking drain valve and installed them. Hints: take a photo of the assembly before you take it apart. Getting the push on nut off was an ordeal, as some have said. I spend at least two hours getting it off. I hope you have secret tool X13 to make it faster. Hint #2: There is play in the drain valve shaft, so I held it toward me with a pair of pliers while I pushed the new push on nut all the way tight to hold the new rubber washer. Hint #3: I used plumber's grease on the washer and shaft to make installation easier. I found the two pairs of long-handled needle nose pliers very useful. Oh, I sanded the rust off the solenoid actuator and added a bit of WD-40 and now the error code problem (as well as the leak) is over.

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Diagrams and Parts List for this repair

Part PhotoPart DescriptionPriceAvailability

Piston and Nut Assembly

Part Number: PS260690

$10.02
In Stock