P2E
Thermo King
Warning

Remote Return Air Temperature Sensor Fault (DSR)

Fault in the remote return air temperature sensor on the DSR system.

Possible causes

  • Remote sensor cable damaged
  • Open or short in sensor circuit
  • Failed remote sensor
  • Loose connector at controller

Recommended actions

  • Inspect remote sensor cable
  • Check sensor resistance against spec
  • Replace sensor if needed
  • Verify connector integrity

Can't find your code? Talk to an expert

$150

One-on-one phone session with a Low Temp refrigeration tech. Emergency temporary assistance only.

Have a question? Ask the community

Thousands of refrigeration mechanics read and answer for free. Post your case in under 1 minute.

Need a professional diagnosis?

Low Temp Service — refrigeration experts in Florida.

Contact us