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2022 CADILLAC XT5
3.6L V6•FWD•AUTOMATIC•gas
3 active safety recalls on this vehicle — view recalls
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Repairs0Labor474Torque3273Fluid7DTC2012Battery1Maintenance0Recalls3
P0409moderate severityPowertrain

Exhaust Gas Recirculation Sensor A Circuit

on 2022 Cadillac XT5 3.6L V6 · FWD

What this code means

There is a fault in the EGR position sensor circuit. This prevents the PCM from knowing how far the EGR valve is open, affecting emissions.

Symptoms

  • Check engine light on
  • Rough idle
  • Failed emissions test

Common causes

  • Faulty EGR position sensor
  • Wiring or connector problems
  • Carbon-clogged EGR valve
  • Bad PCM

Diagnostic steps

  1. Read code and freeze frame data
  2. Inspect EGR sensor wiring and connector
  3. Test sensor voltage and ground
  4. Replace EGR sensor or valve as needed
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🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years. Spot an error? Use the Help link above — a human reads every report.
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