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2017 CHEVROLET SILVERADO 1500
5.3L V8 EcoTec3 L83•RWD•AUTOMATIC•gas
6 active safety recalls on this vehicle — view recalls
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Repairs421Labor499Torque4352Fluid8DTC1251Battery1Maintenance0Recalls6
P1401moderate severityPowertrain

EGR System Performance

on 2017 Chevrolet Silverado 1500 5.3L V8 EcoTec3 L83 · RWD

What this code means

The EGR system flow does not meet expected performance. Similar to OBD code P0401, this points to insufficient or excessive EGR flow.

Symptoms

  • Check engine light on
  • Rough idle
  • Pinging or knocking

Common causes

  • Clogged EGR passages
  • Faulty EGR valve
  • Carbon buildup
  • Vacuum or wiring fault

Diagnostic steps

  1. Scan for EGR codes
  2. Command EGR valve with scan tool
  3. Inspect EGR passages for clogging
  4. Check EGR valve operation and wiring
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Other Powertrain codes on this vehicle

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