P1323 Code Buick – Low Frequency 24X Reference Circuit

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What are the possible causes of DTC P1323 Buick?

NOTE: The listed causes may not be a complete list of all potential problems, and there may be other causes.

  • Faulty 24X CKP sensor
  • 24X CKP sensor wiring harness is open or short-circuited
  • Poor electrical connection in the 24X CKP sensor circuit

How to repair DTC P1323 Buick?

Check the “Possible Causes” listed above. Visually inspect the wiring harness and related connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

When is Buick code P1323 detected?

No 24X reference pulse is received by the Powertrain Control Module (PCM), and the line is low for 4 seconds.

What are the possible symptoms of code P1323 Buick?

  • Check Engine Light on (or soon-to-be Engine Maintenance Warning Light)

What does Buick code P1323 mean?

The Ignition Control Module generates a 4X signal and a 24X signal that are used by the PCM for ignition and fuel control. In this diagnostic test, the PCM checks for the reception of 4X reference pulses without 24X reference pulses. When the engine is running and the PCM receives 4X reference pulses without 24X reference pulses, and the 24X reference signal line is low for 4 seconds, DTC P1323 is set.

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