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2002 RAM 1500
5.7L V8•4WD•gas•HEMI
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Repairs0Labor516Torque141Fluid11DTC1703Battery1Maintenance0Recalls0
P0533low severityPowertrain

A/C Refrigerant Pressure Sensor Circuit High Input

on 2002 Ram 1500 5.7L V8 · 4WD

What this code means

The A/C pressure sensor signal voltage is too high. This may indicate an open circuit or excessive system pressure.

Symptoms

  • A/C not cooling properly
  • Compressor disengages
  • Check engine light on

Common causes

  • Overcharged refrigerant
  • Faulty pressure sensor
  • Open circuit in wiring
  • Bad connector

Diagnostic steps

  1. Retrieve codes
  2. Check system refrigerant pressure
  3. Inspect wiring for opens
  4. Test sensor voltage output
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