For Shop Owners

P1406 GMC - EGR Valve Pintle Position Circuit

Repair Importance Level: 2/3
Repair Difficulty Level: 2/3 What does this mean?

Possible causes

  • Faulty Exhaust Gas Recirculation (EGR) valve
  • Carbon blockage of the pintle
What does this mean?

Tech notes

The P1406 code means that the EGR valve is 10% of the expected position by the Powertrain Control Module (PCM), usually caused by carbon built up n the EGR valve. Start by cleaning the EGR valve.
What does this mean?
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Posted and Edit by 08-19-2016