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2015 CHEVROLET SILVERADO 1500
5.3L V8 EcoTec3 L83•RWD•AUTOMATIC•gas
11 active safety recalls on this vehicle — view recalls
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Repairs421Labor498Torque4352Fluid8DTC2000Battery1Maintenance0Recalls11
P2623high severityPowertrain

Injector Control Pressure Regulator Circuit

on 2015 Chevrolet Silverado 1500 5.3L V8 EcoTec3 L83 · RWD

What this code means

A fault was found in the injector control pressure regulator circuit. This regulator controls the high pressure used to fire the injectors on some diesels.

Symptoms

  • Hard starting
  • Low power
  • Rough running

Common causes

  • Faulty pressure regulator
  • Wiring or connector fault
  • Low oil or fuel pressure
  • Failed control module

Diagnostic steps

  1. Verify code with scan tool
  2. Check regulator circuit wiring
  3. Test regulator resistance
  4. Inspect control pressure with scan data
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