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2020 SUBARU BRZ
2.0L H4•RWD•MANUAL•gas
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Repairs0Labor473Torque2423Fluid8DTC1884Battery1Maintenance0Recalls0
P2202moderate severityPowertrain

NOx Sensor Circuit Low Bank 1

on 2020 Subaru BRZ 2.0L H4 · RWD

What this code means

NOx sensor bank 1 signal is below minimum expected voltage.

Symptoms

  • Check engine light
  • Incorrect DEF injection rate

Common causes

  • Sensor short to ground
  • Wiring fault
  • Failed sensor

Diagnostic steps

  1. Measure signal voltage
  2. Check wiring for shorts to ground

Repair notes

Repair wiring or replace NOx sensor.

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