Pressure sensor error 1 to 3

Error code
  • 034860 Pressure sensor error 1
  • 034861 Pressure sensor error 2
  • 034862 Pressure sensor error 3
Occurrence condition
  • The value measured by the pressure sensor is outside the threshold range even though it should be atmospheric pressure.
  • The zero-point correction value of the pressure sensor is outside the threshold range.
  • The internal air could not be released during initialization operation of the valve selector.
Assumed cause
  • Pressure sensor failure
  • Selector Unit failure
  • +3.3V power is not supplied
Related parts
  • Selector Unit
Troubleshooting
Step Confirmation and action YES NO
1

Check harness connection

Are the connectors of the harnesses connecting to the Selector Unit properly connected?

If not, reconnect them properly.

[Part(s) to be checked]

  • Connectors of the Selector Unit
  • Other connectors and FFCs you disconnected and reconnected

[Action]

  • Connect the connectors properly.


  • Is the error resolved?
 End

Go to step 2
2

Replace the Selector Unit

  • Is the error resolved?
 End

Contact Epson local service representatives.