P2 🟡 Repair Required

Mitsubishi Error Code P2: Indoor Pipe Thermistor Error

⚠️ Your Mitsubishi HVAC system has detected an issue with the indoor pipe thermistor. It's safe to keep running, but you should schedule a professional repair soon.

How to Fix Mitsubishi Code P2

  1. Check if the indoor unit is receiving power
  2. Inspect the wiring harness for any visible damage
  3. If you're comfortable, clean the thermistor gently with a soft brush
Type: led blink count Display: indoor unit led

What Does Mitsubishi Error Code P2 Mean?

The P2 error code on your Mitsubishi HVAC system indicates a problem with the indoor pipe thermistor. This component measures the temperature of the refrigerant as it enters the indoor unit. If it's not working properly, your system might not cool or heat correctly. The most common causes are a faulty thermistor or a problem with the wiring.

Common Causes of Mitsubishi Code P2

  • Faulty indoor pipe thermistor
  • Wiring issue between the thermistor and the main circuit board
  • Incorrect thermistor installation
  • Dirt or debris blocking the thermistor

Applicable Mitsubishi Models

City Multi (VRF)⚡City Multi (Y)⚡Diamond (PJ)⚡Diamond Plus⚡Diamond Series⚡Ducted Systems⚡M-Series⚡MSZ⚡MSZ Series⚡MSZ-AP⚡MSZ-AP Series⚡MSZ-AP5 Series⚡MSZ-AS⚡MSZ-FD⚡MSZ-FE⚡MSZ-FS⚡MSZ-FS/FD Series⚡MSZ-FT⚡MSZ-FY⚡MSZ-GE⚡MSZ-LV⚡MUZ-FE Series⚡P-Series⚡PUMA⚡PUMY⚡Puff (P-Series)⚡
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Replacement Parts for Mitsubishi Mini-Split Code P2

Indoor Pipe Thermistor OEM: 520030-0000
Wiring Harness OEM: 520031-0000