P00153
Carrier Transicold
Critical

Check Return Air Sensor

Critical error in the return air sensor during Pretrip.

Possible causes

  • RAS sensor out of tolerance
  • Main harness failure
  • Electrical intermittency in the microprocessor

Recommended actions

  • Calibrate or replace the RAS sensor
  • Clean baseboard connectors
  • Verify sensor reference voltage

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