Error code

OBD2 P0323

OBD2P0323
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Ignition/Distributor Engine Speed Input Circuit Intermittent.

Severity

highThe vehicle may be drivable but with significant performance issues and potential safety risks.

Summary

P0323 indicates an issue with the crankshaft or camshaft position sensor circuit, which is used by the Engine Control Module (ECM) to monitor engine speed and timing.

Symptoms

  • Check engine light on
  • Engine hard to start
  • Engine will not start
  • Engine stalls
  • Increased fuel consumption
  • Decreased engine performance

Common Causes

  • Defective crankshaft position sensor
  • Faulty wiring or connection to the crankshaft position sensor
  • Defective camshaft position sensor
  • Faulty wiring or connection to the camshaft position sensor
  • Defective ignition/distributor speed sensor
  • Faulty wiring or connection to the ignition/distributor speed sensor

Diagnosis

  1. Check voltage on components using a scanner
  2. Inspect wiring for faulty connections or corrosion
  3. Visually inspect crankshaft position sensor for damage
  4. Visually inspect camshaft position sensor for damage
  5. Perform continuity tests with an ohm meter

Fixes

  • Replace defective sensors and repair faulty wiring

FAQ

What should I do if the engine won't start?

Check for issues with the crankshaft or camshaft position sensor circuits, as these can prevent proper ignition timing.

How can I avoid replacing unnecessary parts?

Ensure you diagnose and replace only the faulty sensors or wiring to avoid unnecessary expenses.

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

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