P0336 -Meaning, Causes, Symptoms, & Fixes

Code P0336 Definition

The engine control module, ECM, has detected an improper/irregular voltage coming from the crankshaft position sensor.

What Does P0336 Mean?

The ECM relies on the crankshaft position sensor to know when to fire the injectors and spark plugs. When code P0336 is set, the ECM is reading an irregular voltage coming from the crankshaft position sensor. There are two different styles of crankshaft position sensors- a pick-up wire type sensor which has two wires and produces an A/C voltage signal and a Hall-effect sensor which has three wires (power, signal, and ground) and produces a digital 0V or 5V signal. Both of these sensors require an Oscilloscope to fully diagnosis, but a basic diagnosis can be made with a multimeter.

What Are The Symptoms Of Code P0336?

  • Check Engine Light
  • Hard Start
  • No Start
  • Intermittent Stalling
  • Intermittent Misfire

*No noticeable adverse conditions in some cases

What Is The Cause Of Code P0336?

  • Faulty crankshaft position sensor (most common)
  • Damaged reluctor ring
  • Loose or improperly installed reluctor ring
  • Chaffed wiring
  • Poor connection at connector
  • Open in crankshaft position sensor circuit

How Serious Is Code P0336? – Severe 

This trouble code can end up leaving you stranded due to the fact that your car may not start without a signal from the crankshaft position sensor. It is advised that you get this concern fixed as soon as possible before needing to tow it.

Code P0336 Common Diagnosis Mistakes

The most common diagnosis mistake is replacing the crankshaft position sensor without inspecting the reluctor ring or the wiring for the sensor.

Tools Needed to Diagnose:

  • FIXD
  • Basic hand tools
  • Multimeter
  • Vehicle Specific Service Manual
  • Basic hand tools 

How To Diagnose And Repair Code P0336?

Difficulty of Diagnosis and Repair (3 out of 5)

  1. Check to see if there are any other codes along with P0336 and clear your Check Engine Light with FIXD
  2. Check the freeze frame data in order to pinpoint the issue
  3. Locate the crankshaft position sensor (CKP) and inspect the wiring for chafing or damage
  4. Check to make sure the connector is fully connected. Tech Tip: Some CKP connectors can appear connected and not be fully clicked into place. Consult your vehicle-specific service manual if you have trouble with the style of connector for your vehicle.
  5. Look at the CKP to determine if you have 2 wires or 3 wires coming out of it.
  6. If you have a 2 wire CKP: 
  7. Remove the sensor and connect both leads of your multimeter to the sensor
  8. Put the tester in A/C Voltage
  9. Slowly move a screwdriver in front of the sensor part of the CKP (the part facing the reluctor ring)
  10. If the sensor if working you should see a voltage reading
  11. If you don’t get a voltage reading, replace the CKP
  12. Also, while the sensor is out, check the reluctor ring. It shouldn’t move if you try and push it side to side, and the teeth should all be the same. (Rotate the crankshaft to inspect all the teeth. There will be gaps in certain areas)
  13. Tech Tip: Some engines will have the reluctor ring on the crank pulley, some of the flywheel/flexplate, and some on the crankshaft itself inside the crankcase.
  14. If you have a 3 wire CKP.
  15. Check the sensor for a 12v power supply
  16. Check for a good ground signal
  17. Remove the sensor and check the reluctor ring. It shouldn’t move if you try and push it side to side and the teeth should all be the same. (Rotate the crankshaft to inspect all the teeth. There will be gaps in certain areas)
  18. Tech Tip: Some engines will have the reluctor ring on the crank pulley, some of the flywheel/flexplate, and some on the crankshaft itself inside the crankcase.
  19.  If at this point you haven’t found any problems, consider replacing the crankshaft position sensor. This code can be intermittent and hard to diagnose if it’s not actively malfunctioning. 

Estimated Cost of Repair

For error code P0336, one or more of the below repairs may be needed to solve the underlying issue. For each possible repair, the estimated cost of repair includes the cost of the relevant parts and the cost of labor required to make the repair. 

  • Crankshaft position sensor $190-$250
  • Wiring repair/replacement $100-$1000
  • Reluctor ring $60-$800

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