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-   OBD-II Trouble Shooting (https://www.gmforum.com/obd-ii-trouble-shooting-153/)
-   -   P1406 (https://www.gmforum.com/obd-ii-trouble-shooting-153/p1406-299217/)

Danthurs 05-10-2011 09:34 PM

P1406
 
P1406

Description
EGR pintle performance

Symptoms
can cause driveability, performance, mileage, and emissions issues.

Causes

  • Open EGR ignition filter circuit.
  • Excessive deposits on EGR valve pintle or seat.
  • Poor connection or damaged harness.
  • EGR Valve Icing.
Solutions
  • Test for voltage at the EGR plug
  • Inspect and clean EGR pintle
  • Inspect EGR plug for damage or loose connection.


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