P0393 OBD Error Code: Problem & Solutions

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The P0393 error code can be described as Camshaft Position Sensor "B" Circuit High (Bank 2).

The PCM is being told by the camshaft position sensor that in what position the camshaft is in and it would help to facilitate the proper fuel delivery as well as ignition timing. The signal is then sent to the powertrain control module by the sensor in the form of a voltage reading.

This trouble code is generic, which would mean that it can apply to all the vehicles which are equipped with the OBD-II or the vehicles which are made since 1996 up to the present. The specifications on the definition, the troubleshooting steps as well as repairs can always vary from one vehicle make to another.

This can happen because of a lot of reasons and the mechanic should diagnose the specific cause for this code.

What causes this problem with the Camshaft Position Sensor "B" Circuit High (Bank 2)?

• The engine fluid might be contaminated
• Defaults in the camshaft sensors
• The crankshaft sensors might have some flaws
• Faulty starter motor
• The car battery might be weak
• Faulty starting system circuit
• There can be opened or shorted wiring to the camshaft sensor
• Corroded or fluid-soaked connector/camshaft sensor
• Programming error in the powertrain control module

1. Fuel Injector - There can be some issues with the Fuel Injector due to which you may see P0393 code appearing over and over again. Visit us to buy best quality Fuel Injector online.
2. Cylinder Head Gasket - A lot of issues can arise do to defective Cylinder Head Gasket. Did you just see P0393 code flashing? Now you know the reason why it is appearing. Get it inspected and replaced on time.
3. Camshaft Position Sensor - Faulty Camshaft Position Sensor can be the reason why P0393 code is flashing. Visit us to purchase top notch Camshaft Position Sensor online.
4. Engine Control Module - It is an important auto part which needs full care. A faulty Engine Control Module can be a reason behind the flashing up of P0393 code.
5. Powertrain Control Module - OBD Code P0393 can appear because of faulty Powertrain Control Module.
6. Crankshaft Position Sensor - P0393 error code also relates to problems with the Crankshaft Position Sensor. Find best quality Crankshaft Position Sensor with us.
7. Ignition Coil - OBD Error Code P0393 can simply be due to faulty Ignition Coil. Replace old and damage components now!
8. Exhaust System Parts - If there is any fault detected in the Exhaust System Parts, it will flash OBD Code P0393. Replace faulty Exhaust System Parts components now!

It is vital to know the symptoms of an issue as only then you would be able to solve the problem. So that’s why we have listed out some major symptoms of OBD Code P0393 here:

Common Symptoms

• Issue of hesitation upon acceleration
• Lack of overall engine performance
• Fuel efficiency might start decreasing
• The catalytic converter may become overheated due to timing issues
• Spark detonation when decelerating

The repairs which you will have to do to correct this fault code are simply straightforward; you can surely pinpoint the necessary repairs on the basis of your diagnosis. Have a look at some common fixes:

• You must repair electrical components like wiring
• The faulty camshaft sensors should be replaced
• Replace or replace the damaged crankshaft sensors
• Make sure that you restore the starter motor
• The weak car battery should be repaired properly
• The quirky starting system circuit should be replaced
• It is very important to replace the contaminated engine fluid with new fluid

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Here are some steps which you should follow in order to diagnose this fault code:

• After verifying the P0393 code with an OBD-II scanner, the mechanic should begin by looking for leaking fluid that could have caused shorts or corrosion within the electrical components.
• If there are any issues then they should be immediately repaired
• The next step is to clear the code from the system
• If the code is still appearing after a retest, the mechanic should then perform voltage tests on the sensor, manually comparing the information to the manufacturer’s specifications
• If the readings are within the correct limits, then there is a need to replace the sensor
• However, if the readings are not within the correct limits, the mechanic should continue checking each possible cause, clearing the code and retesting the system after each attempt, to be sure that they have found the correct solution

Common Mistakes When Diagnosing The P0393 Code

• One most common mistake which a lot of people make is by replacing the sensor when the issue is actually in some other part