P0320 – Ignition/Distributor Engine Speed Input Circuit Malfunction

Meaning:

When there’s an electrical circuit fault in either the CKP sensor or CMP sensor, the P0320 triggers
The P0320 occurs when there’s an electrical circuit fault in either the CKP sensor or CMP sensor

There’s an electrical circuit fault in either the crankshaft position (CKP) sensor or camshaft position (CMP) sensor.

Main Symptoms:

  • Check Engine Light comes on
  • Engine cranks but doesn’t start
  • Engine lacks power
  • Engine misfires, hesitates and stumbles

Possible Causes:

  • Open or short in power supply circuit and/or control circuit between PCM and ignition/distributor/engine speed sensor
  • Defective ignition/distributor/engine speed sensor

Diagnostic Steps:

  • Check that all the connectors and wiring to ignition/distributor/engine speed sensors are in good condition
  • Remove connectors and see if their terminals are burnt/corroded
  • Pull and reset P0320 code, drive the car for several minutes and see if the code returns. If it does then probably a sensor needs replacing

Read More: OBD2 Codes List: Meaning, Fixes, and Free Download