Mitsubishi Error Code P1: Intake Sensor Error

LED Blink Pattern

How to Fix Mitsubishi Code P1

1. Check and clean the intake area to ensure it's not blocked
2. Verify that the system settings are correct
3. If the system is still not functioning properly, contact a professional HVAC technician

How to Reset Mitsubishi Code P1

1. Turn off the unit using the remote control or wall controller.
2. Turn off the circuit breaker for the outdoor and indoor units. Wait 60 seconds.
3. Restore power at the breaker.
4. Turn the unit on with the remote control. If the error returns, the fault needs professional diagnosis.

Resetting clears the code from the display but does not fix the underlying fault. If the code returns after reset, proceed to the diagnostic steps above.

What Does Mitsubishi Error Code P1 Mean?

The P1 error code on your Mitsubishi HVAC system indicates a problem with the intake sensor. This sensor measures the temperature and pressure of the air entering your system. If it's not working properly, your system may not function as efficiently as it should. While this isn't an immediate safety hazard, it's important to address the issue to prevent further damage or higher energy bills.

Common Causes

• Wiring issues or damaged sensor
• Dirty or obstructed intake
• Faulty control board
• Incorrect system settings

Diagnostic Steps

Replacement Parts

Related Codes on Same Models

Other codes that affect the same Mitsubishi model families as P1.