P0336 OBD2 Code: Crankshaft Position Sensor A

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The P0336 OBD-II error code can be defined as the Crankshaft Position Sensor “A” Circuit Range/Performance. The Check Engine sign is illuminated when the powertrain control module(PCM) receives an error in the signal input from the crankshaft position sensor.

What does P0336 mean?

P0336 OBD2 Code mean

When the P0336 error code is detected in the system, it means that there is a fault in the crankshaft position sensor. The crankshaft position sensor is responsible for measuring the rotational speed and the position of the crankshaft.

This is measured by changes in the magnetic flux between the peaks and troughs of the reluctor ring on the crankshaft. The error could thus be an issue with the reluctor ring or it could also be an electrical problem.

Symptoms of P0336

There might be issues with the engine while driving which can be observed to help determine this error. There are common symptoms that can be noted no matter the design or the type of the vehicle. You should keep an eye out for some of the early symptoms. Some of them are:

  • The Check Engine sign is lit up.
  • Engine starting might be difficult which is known as hard start or cranking engine.
  • The engine might suddenly die and not fire back up.
  • Engine misfires might also occur in one or more of the cylinders.
  • Gas mileage might also decrease.
  • During acceleration, the engine might suddenly stop or be erratic.

Causes of P0336

There can be several reasons which can cause a P0336 error code to occur in a vehicle. While some causes are most common and predictable, not all problems can be identified with a single glance. Careful observation is required to pinpoint the main cause of the error code. Some common causes for the error code P0366 are:

  • The crankshaft position sensor might be damaged or faulty.
  • Loose connection issues with the connector plugs of the crankshaft sensor.
  • Faulty wirings or electromagnetic interference issues with the circuits.
  • Software or programming issues with the powertrain control module.
  • Dislodged or improperly installed reluctor ring issues.
  • Poor connection between the crankshaft position sensor and the reluctor wheel.

How do you diagnose a P0336 OBD-II error code?

P0336 OBD2 Code dignose

To diagnose a P0336 error code, it is best to have a professional mechanic or a technician do it for you. As the P0336 error code deals with the crankshaft position sensor, it requires professional tools and knowledge to determine the error. The steps for diagnosing and resolving this error may also vary according to the vehicle’s design model. 

The first step in determining the error is to use an OBD-II scanner to check for all related errors that might have occurred in the system. After determining that the error code is P0336, a visual assessment is to be done by a professional of the crankshaft position sensor, its connections, wirings, reluctor wheel, connectors, etc. A thorough inspection should be done to prevent any further errors.

The wirings and the connectors should be checked for any sign of damage or corrosion. The sensor itself might also be damaged or faulty so its resistance should be checked to determine whether it is working properly. The reluctor ring on the crankshaft should also be checked for any damages. Any loose connections or open circuit conditions should be checked properly. After ensuring everything is okay, the signals from the crankshaft position sensor should be correct.

Some common mistakes while diagnosing

There are numerous reasons which might contribute to the P0336 error code occurrence in a system. Sometimes, mistakes can be made while diagnosing the root cause of the error. There might be several instead of a single reason why this error occurred. So, it is imperative to check thoroughly for any reasons this error might take place.

One of the most common mistakes made while diagnosing is to suspect that there might be a problem with the camshaft timing. More often than not, there is a problem with the sensor itself. The loose or faulty wiring connections also can be a common problem that is not checked and overlooked before replacing the sensor itself.

How do you fix a P0336 error code?

The P0336 error code is one of the most frustrating and complex error codes in a system. This error code could leave you miserably stranded in the middle of nowhere on your road to your destination. One of the most common problems of this error is that the engine might completely stop and not restart before the issue is resolved by a practiced professional. The resolving of this error also might need a licensed mechanic to reprogram or remove the crankshaft position sensor. 

A licensed mechanic will need proper tools to fix the P0336 error in a vehicle. The error is focused on the crankshaft position sensor, so he/she will need a replacement of the sensor if necessary.

All the parts connected to the sensor like wirings, connector plugs, reluctor wheels, etc are needed. A resistance check diagram can be used to check the resistance of the sensor. Proper electronic circuit equipment to repair faulty wiring connections between the sensor and the engine control unit is needed. 

Some common methods by which the error can be resolved are:

  • Replacing the crankshaft position sensor if found faulty
  • Inspecting and repairing any loose connection or wirings in the sensor
  • Resolving reluctor wheel issues by replacing or repairing if damaged
  • Replacing connector plugs if found corroded
  • The engine control unit might also be needed to be replaced in some cases.

How can you avoid further errors?

The P0336 code is stored in the trouble code memory of the engine control unit when there is a fault with the crankshaft position sensor and its surrounding connections. There is a range of other codes that are also triggered due to the malfunction in the crankshaft position sensor and its circuit.

It is essential therefore to be aware of any malfunctioning or abrupt changes in the engine of your vehicle. Any discomfort or fault in the engine should be thoroughly inspected to prevent the occurrence of the P0336 trouble error code in the system.

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