Guide To P0338 OBD Error Code Solutions

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OBD error code P0338 that denotes crankshaft position sensor Circuit A high input is a diagnostic trouble code, also known as DTC is generic OBD error code. Though it applies to all OBD-II vehicles, the steps to fix it might vary depending upon the manufacturer specifications. The purpose of the crankshaft position sensor is to measure the speed and the rotation of the crankshaft that provides certain important data to the PCM to control ignition and other related timings. OBD error code P0338 will be set when it detects any error with crankshaft position sensor circuit input voltage.

To know more about this error code, go through the sections below.

OBD error code P0338 indicates a high input voltage with the crankshaft position sensor circuit A. Powertrain control module constantly compares the signals that it receives from the camshaft and crankshaft position sensor. When it detects a very high input voltage from the crankshaft position sensor it will set OBD error code P0338. Number of causes can lead to the illumination of this code which are listed below.

What causes this problem with the Crankshaft Position Sensor A Circuit High Input?

• Issues with the crankshaft position sensor
• Bad Crankshaft position sensor’ connectors and wirings
• Reluctor rings being broken or damaged
• Problems with the timing belt
• Problems with the PCM (powertrain control module) itself
• Corroded connectors to the crankshaft position sensor
• Overcharged alternators

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Our main motive is to achieve customer satisfaction as for us our customers are everything and that’s why we will help you to diagnose P0300 code by mentioning some major symptoms below:

Common Symptoms

• Illumination of Warning light for Service Engine Soon
• Steep fall in engine performance and power
• Engine stalling
• No start conditions
• Fall in fuel economy
• Engine misfires

If you wish to correct this fault code, then you have to follow certain steps. Correcting a problem needs your careful attention. Here are some ways with the help of which you will be able to correct the OBD Code P0338

• Check and replace the damaged or failing crankshaft position sensor
• Make sure all wiring and connectors are in good shape, replace the damaged ones to get rid of this code
• In case the reluctor rings are damaged, undergo a complete reluctor rings to crankshaft sensor replacement
• If timing belt is broken, you will need to fix and replace them at the earliest
• If the PCM itself is damaged, which is a rare case. Replace the PCM too.

However, if you face any issue then we have stocked a wide range of best priced Connector, Crankshaft Position Sensor, Battery and more to help you out in fixing your car.

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

First and foremost, you will need to use an OBD-II scanner to inspect all the stored codes. Clear the codes and conduct a road test, and check if the code returns. Next, visually inspect the gap and alignment of the sensors. Check your vehicle’s batteries properly. Also inspect for short circuits and other related electrical parts.

Common Mistakes When Diagnosing the P0338 Code

Make sure to avoid any misdiagnosis. In order to do so be sure of not replacing the crankshaft position sensor without making sure of it being damaged. Chances are only simple soldering can solve the issue and you don’t need to undergo complete replacement. Also make sure you check the batteries and engine properly for any potential damage.