GE GDT226SSLSS 24 in Built-In Dishwasher with Piranha Disposal C5 Error Fix: Service Code — Thermistor Error

Error code C5 on the GE GDT226SSLSS 24 in Built-In Dishwasher with Piranha Disposal means: Service Code — Thermistor Error. Diagnostic code C5 indicates the water temperature sensor (thermistor) is faulty — the sensor is reporting an abnormal reading; test the thermistor for proper resistance

The most successful fix is "Test and Replace the Thermistor Sensor" (medium difficulty, ~40 minutes). Estimated DIY cost: $10-$20. HomeMD has 2 community-ranked fixes for this error.

This error is rated medium severity. It should be addressed soon, but your appliance may still function in a limited capacity.

Yes — the top-ranked community fix ("Test and Replace the Thermistor Sensor") is rated medium difficulty and takes about 40 minutes. Tools needed: T20 Torx screwdriver, Multimeter.

DIY cost: $10-$20. Professional repair typically costs $130-$190. Many homeowners save money by trying the top-ranked community fix first.

The GE GDT226SSLSS 24 in Built-In Dishwasher with Piranha Disposal has 8 other known error codes, including: BEEP-1 (Single Beep + Flash — Water Fill Issue), BEEP-2 (Two Beeps — Door Not Latched), BEEP-3 (Three Beeps — Water Temperature Issue), BLINK-1 (Start/Reset Light Flashing — Cycle Interrupted), BLINK-7 (Start Light Blinks Seven Times — Heating Element Fault), and 3 more.

Error code C5 also appears on 8 other GE models: GDF535PGRSS 24 in Front Control with Steam Prewash, GDF630PSMSS 24 in Front Control Dishwasher, GDF645SSNSS 24 in Front Control with Steam & Sanitize, GDP630PYRFS 24 in Front Control Built-In Dishwasher 50 dBA Stainless Steel, GDP670SYVFS 24 in Top Control Smart with Dry Boost, GDT550PYRFS 24 in Top Control with Sanitize Cycle, and 2 more. The fix may vary by model, so check each model's specific page for tailored repair steps.