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OBD II Fault Code

  • OBD II P049D

OBD-II Code Decreased engine performance is defined as a Exhaust Gas Recirculation "A" Control Position Exceeded Learning

EGR (Exhaust Gas Recirculation) systems are used to reduce the combustion temperature, thus reducing emissions. If the engine control module (PCM) does not detect the amount of flow requested from the EGR, it will set code P049D.

Decreased engine performance Symptoms

  • Decreased engine performance
  • Increased fuel consumption

Common Problems That Trigger the P049D Code

  • EGR valve failure
  • Powertrain Control Module (PCM) failure
  • Wiring issue

Common Repairs Needed for the P049D Code

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