OBD II Fault Code

  • OBD II P050D

OBD-II Code Decreased engine performance is defined as a Cold Start Rough Idle

The engine control module (PCM) monitors misfires on initial startup. When the PCM detects a misfire on startup, the PCM will set code P050D.

Decreased engine performance Symptoms

  • Decreased engine performance
  • Engine may run rough

Common Problems That Trigger the P050D Code

  • Air intake heater failure
  • Crankshaft Position Sensor (CKP) failure
  • Engine misfire
  • Powertrain Control Module (PCM) failure
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