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2000 BMW X5 4.4I E53
4.4L V8 M62•AWD•AUTOMATIC•gas•M62B44
6 active safety recalls on this vehicle — view recalls
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Repairs0Labor489Torque2160Fluid10DTC1997Battery1Maintenance0Recalls6
P0995low severityPowertrain

Refrigerant Pressure Sensor B Circuit High

on 2000 BMW X5 4.4i E53 4.4L V8 M62 · AWD

What this code means

The refrigerant pressure sensor B circuit is reading a voltage above the normal range. This typically indicates an open circuit or shorted-high wiring fault.

Symptoms

  • A/C performance issues
  • Compressor not engaging
  • HVAC fault indicator

Common causes

  • Open circuit in signal wire
  • Short to voltage in wiring
  • Faulty refrigerant pressure sensor
  • Failed HVAC control module

Diagnostic steps

  1. Scan for stored codes
  2. Inspect wiring for open or short to power
  3. Test sensor reference and ground
  4. Replace sensor if wiring checks good
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