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1998 BMW 528I
2.8L I6 M52•RWD•AUTOMATIC•gas
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Repairs0Labor497Torque3173Fluid8DTC1210Battery1Maintenance0Recalls0
P2200high severityPowertrain

NOx Sensor Circuit Bank 1

on 1998 BMW 528i 2.8L I6 M52 · RWD

What this code means

Malfunction in the NOx sensor circuit on bank 1. Sensor may not be providing accurate readings.

Symptoms

  • Check engine light
  • Failed emissions
  • SCR system may deactivate

Common causes

  • Failed NOx sensor
  • Wiring damage
  • Connector corrosion
  • ECM fault

Diagnostic steps

  1. Check NOx sensor connector
  2. Measure heater circuit
  3. Monitor sensor output with scan tool

Repair notes

Replace NOx sensor bank 1. Verify wiring integrity first.

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