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2014 RAM 2500
6.7L I6 Cummins Diesel•4WD•AUTOMATIC•diesel•turbo
16 active safety recalls on this vehicle — view recalls🏆Sponsored by Lost Pines Precision Automotive· Bastrop, TX
Repairs436Labor519Torque3583Fluid10DTC1037Battery1Maintenance0Recalls16
B0620low severityBody

Interior Temperature Sensor Circuit

on 2014 Ram 2500 6.7L I6 Cummins Diesel · 4WD

What this code means

Malfunction in the interior (in-car) temperature sensor used by the automatic climate control system.

Symptoms

  • Climate control not maintaining set temperature
  • Auto mode blowing wrong temperature
  • Temperature fluctuates wildly
  • Aspirator fan not running

Common causes

  • Faulty in-car temperature sensor
  • Aspirator tube blocked or disconnected
  • Sensor wiring issue
  • Aspirator fan motor failure

Diagnostic steps

  1. Check in-car sensor reading on climate display
  2. Inspect aspirator tube for blockage
  3. Test sensor resistance
  4. Listen for aspirator fan running
  5. Compare sensor reading to actual cabin temp

Repair notes

Replace in-car temperature sensor or clear aspirator tube blockage.

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