OBD II Fault Code

  • OBD II P0323

OBD-II Code Decreased engine performance is defined as a Ignition/Distributor Engine Speed Input Circuit Intermittent

The Crankshaft Position Sensor measures the exact rotational speed and position of the crankshaft. This provides a critical data signal used by the Powertrain Control Module (PCM) to control Ignition Spark Timing and Fuel Delivery. This sensor may be built into the distributor on older vehicles. When the PCM detects an irregular signal or no signal, it will set code P0323.

Decreased engine performance Symptoms

  • Decreased engine performance
  • Engine may not start
  • Increased fuel consumption

Common Problems That Trigger the P0323 Code

  • Broken tone ring
  • Crankshaft Position Sensor (CKP) failure
  • Distributor failure
  • Powertrain Control Module (PCM) failure
  • Wiring issue

Common Repairs Needed for the P0323 Code

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