Error code

OBD2 P0320

OBD2P0320
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Ignition/Distributor Engine Speed Input Circuit.

Severity

highDriving may be difficult and unsafe due to engine starting issues and performance problems.

Summary

P0320 indicates an issue with the crankshaft or camshaft position sensor circuit malfunction, which affects the engine's speed input to the ECM.

Symptoms

  • Check engine light on
  • Engine is 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 defects.
  4. Inspect camshaft position sensor for defects.
  5. Perform continuity tests with an ohm meter to identify open or shorted sensors.

Fixes

  • Replace defective sensor (crankshaft, camshaft, or ignition/distributor speed sensor).

FAQ

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

Check for issues with the crankshaft and camshaft position sensors as well as their wiring connections.

How can I prevent this issue from recurring?

Regularly inspect sensor wiring and connectors to ensure they are free of corrosion or damage.

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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