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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
P0653moderate severityPowertrain

Sensor Reference Voltage B Circuit High

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

What this code means

The PCM detected a high voltage condition on the B sensor reference voltage circuit. This may cause several sensors to report faulty readings.

Symptoms

  • Multiple sensor codes
  • Rough running engine
  • Check engine light on

Common causes

  • Short to voltage in reference circuit
  • Open ground in circuit
  • Damaged wiring or connector
  • PCM internal fault

Diagnostic steps

  1. Scan stored codes
  2. Check circuit for short to power
  3. Verify sensor grounds
  4. Test PCM reference voltage
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