P0814 - OBD Trouble Code

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The OBD error code P0814 is set when there’s a problem noted with the transmission shift range circuit and sensor. The function of the transmission range sensor is to send data to the Powertrain Control Module or the PCM, which is used by the PCM module to decide on the optimal engine timing, correct strategy for fuel delivery and other important and related functions. The PCM receives data from other sensors too like the vehicle speed sensor or the transmission shift solenoid, when the data received from these other sensors suggests that the transmission shift range is incorrect, it will proceed to setting the P0814 trouble code.

The purpose of the transmission range display is to show the position of the transmission on the instrument cluster, hence any issue in the display will not allow the transmission gear to be displayed and the P0814 code will be triggered.

What causes this problem with the Transmission Range Display Circuit?

• Damaged electrical components (wires, connectors, and circuits)
• Range sensor connector has become corroded
• Faulty range sensor

1. Transmission Range Sensor Circuits - The sensor circuits can very well be the reason for the P0814 code to be triggered. Check them thoroughly and repair or replace as needed.
2. Transmission Range Sensor Connector - A Corroded connector can cause issues with the functioning of the sensor. Repair or replace it and get rid of the P0814 error from flashing.
3. Transmission Range Sensor - You may have to totally replace the sensor if it’s beyond repair. Only opt for the best quality and solve the P0814 error.
4. Engine Control Module - Replace your ECM is needed with Parts Avatar. We have a wide range of auto parts that you buy online from the comfort of your home. Take help from our online customer service 24/7 to get exactly what you’re looking for.
5. Powertrain Control Module - A very crucial part of your vehicle, buy only the best from us. Avail free shipping on orders over $99. We ship to the remotest corners of Canada!
6. Diagnostic Tools - Only the best and accurate diagnostic tools will help you when trying to resolve the P0814 code. We stock a wide range of brands for you to select as per your requirement.

We at Parts Avatar Canada care for our customers, and that’s why we will help you to diagnose P0814 code by listing out some major symptoms. They are mentioned below as follows

Common Symptoms

• Check engine light is illuminated on the instrument panel
• Rough shifting of transmission
• Inability to shift as per usual
• Diminished fuel efficiency noted compared to the regular fuel efficiency

Here are some simple ways with which you can correct this P0814 trouble code:

• Repair or replace all the damaged wires, circuits and connectors
• Repair or replace the Transmission Range Sensor as needed
• Repair and Replace Transmission range sensor connector if it is corroded

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

It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P0814 code to be stored, we have noted the steps in order for you:

• Start your diagnosis of P0814 code by using the standard OBD-II scanner. Connect it to the vehicle diagnostic port and retrieve all the codes and freeze frame the data. Make note of all the codes in their order of occurrence, this will serve as reference if the code is intermittent. Now clear them and go on a test drive. If the code doesn’t return and PCM module enters readiness mode, then it’s a sign of an intermittent condition, in-order to diagnose this, the problem may have to worsen.
• If the code is reset, you will have to start a visual inspection of all the wires and connectors related with the transmission range sensor. Look for signs of damages like shorted, loose, or even corroded wires and connectors. Replace all the damaged parts or repair them if that will work. Use the Digital volt/ohmmeter or DVOM to test the resistance and continuity in the circuits. They should all be within the range set by the manufacturer.
• Now inspect the transmission range sensor and see if it is adjusted properly. If it’s not then correct it, if however, it seems to be in correct position, start looking for any damages that may have occurred to the sensor or corrosion of the sensor connector. Repair or replace as needed.
• Remember to always reset the trouble codes every time a repair or replacement is done to ensure it was done properly and get clarity on where the issue was stemming from. This is the simplest way to know if the issue has been resolved without wasting time continuing diagnosis.

Common mistakes when diagnosing the P0814

• Not following the OBD-II trouble code diagnosis protocol. This is the most commonly found error made during the diagnosis.
• Replacing transmission range sensor instead of adjusting it. A simple adjustment can save time, energy as well as money on fixing the transmission range sensor.