P0339 Crankshaft Position Sensor Intermittent

P0339 Crankshaft Position Sensor Intermittent - the crankshaft position sensor input voltage is implausible. Default actions, the MIL light illuminated.


P0339 Crankshaft Position Sensor Intermittent


Possible causes:
  • 5-volt supply circuit shorted to voltage.
  • 5-volt supply circuit shorted to ground.
  • 5-volt supply circuit shorted to the CKP sensor ground circuit.
  • 5-volt supply circuit open/high resistance.
  • CKP signal circuit shorted to voltage.
  • CKP signal circuit shorted to ground.
  • CKP signal circuit shorted to the CKP sensor ground circuit.
  • CKP signal circuit open/high resistance.
  • CKP sensor ground circuit open/high resistance.
  • Crankshaft position sensor.
  • Tone wheel/pulse ring.
  • Powertrain Control Module (PCM).

Diagnose code P0339 Crankshaft Position Sensor Intermittent


(Sorry!!! Step 1-5, refer to code P0335)
Step 1. Check for applicable service bulletin
Step 2. Check for an active DTC
Step 3. Wire harness/CKP sensor inspection
Step 4. Check the vehicle repair history
Step 5. Check the 5-volt supply circuit voltage

Step 6. Check the CKP signal circuit voltage
Measure the voltage on the CKP signal circuit at the CKP sensor harness connector.

Is the resistance between 4.8 and 5.2 volts?

Yes, go to step 7.
No, go to step 9.

Step 7. Check the sensor ground circuit for an open/high resistance
Turn the ignition off, disconnect the PCM harness connector. Measure the resistance of the sensor ground circuit from the CKP sensor harness connector to the PCM harness connector.

Is the resistance below 3.0 Ohms?

Yes, go to step 8.

No, repair the sensor ground circuit for an open or high resistance.

Step 8. Tone wheel/pulse ring inspection
Turn the ignition off, disconnect the battery ground cable. Remove the CKP sensor. Visually inspect the sensor mountng location for damage, foreign material. Rotate the engine and if possible inspect the target wheel for any signs of damage.

Were any problems found?

Yes, repair issues is mounting location. Repair or replace the tone wheel/pulse ring as necessary.

No, replace the Crank position sensor. Using the scan tool, perform the ''Cam/Crank relearn'' or Powertrain verification test procedure.

Step 9. Check the CKP signal circuit for a short to ground
Turn the ignition off, disconnect the PCM harness connector. Check for continuity between ground and the CKP signal circuit at the crankshaft position sensor harness connector.

Is there continuity between ground and the CKP signal circuit?

Yes, go to step 10.
No, repair the CKP signal circuit for a short to ground.

Step 10. Check the CKP signal circuit for an open/high resistance
Turn the ignition off, measure the resistance of the CKP signal circuit between the CKP sensor harness connector to the PCM harness connector.

Is the resistance below 3.0 Ohms?

Yes, go to step 11.
No, repair the CKP signal circuit for an open or high resistance.

Step 11. Check related PCM and component connections

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