P0700 Code (Meaning, Causes, Symptoms & Fixes)

P0700 is an OBD-II generic code that indicates a fault in the transmission control system.

The vehicle’s internal computer uses warning errors to communicate with you about any internal problems. While some warning lights may be caused by a simple problem that can quickly be fixed, others could indicate severe damage to the engine or transmission.

The Transmission system is a critical component of your vehicle. It is vital that you, as a driver, maintain a flawless transmission. Understanding error codes is essential for understanding the transmission.

The P0700 code can be used to identify a general problem you might encounter when driving an automobile with an automatic transmission.

This article will provide all the information you need to know about the P0700 code. This article outlines the definition of the code, its symptoms, and expected repair options. It also gives an estimate of the repair cost.

What Is The P0700 Code?

The P0700 OBD-II scanner error code is a generic code applicable to all vehicles with OBD-II. It refers to the transmission control module (TCM) in the automatic transmission. The P0700 is an Informational code because it indicates a general fault and not a specific fault.

A scan tool that communicates to the TCM will help you identify the problem. There is also The malfunction indicator lamp (MIL), which illuminates if the code P0700 is present to inform you of the presence of the code.

If you have a P0700 code, there is a possibility that you are experiencing poor gas mileage or transmission shifting issues. It could also mean that your engine could stop working or cause problems.

OBD-II scan tools may reveal other codes accompanied with the P0700. Doing a proper diagnosis could help you determine the problem with your vehicle.

What Causes P0700 Code?

This P0700 code is commonly associated with transmission or shift solenoid problems. Most likely, the TCM detects an issue in the transmission, and then the code is displayed.

Here are some of the common causes of a P0700 code

  1. Bad or Failing Transmission Control Module (TCM)
  2. Shortages in the wiring
  3. Transmission problems
  4. Defective shift solenoids
  5. Bad or failing engine coolant Sensor
  6. Lower levels of transmission fluid, or dirty transmission fluid

Also Read: P0430 – Meaning, Causes, Symptoms & Fixes

P0700 Code Symptoms

These are the most common symptoms of P0700. These symptoms may vary depending vehicle which could possibly not show them all.

  1. The check engine light is on
  2. Reduced Transmission performance
  3. Delayed response When changing gears
  4. Abnormal Shifting
  5. Limp Home Mode – limits the vehicle to one gear and limit the speed limit to get the car to a repair shop (limp home)
  6. Fluid leak/burning smell from transmission area – usually red/brownish color/black
  7. Harsh shifting

If you see any of these symptoms, it is important to take your vehicle to a professional mechanic immediately.

How To Diagnose The P0700 Code?

  1. Start by attaching a scanner to your vehicle and verifying that all codes are present. If P0700 is found, it’s usually not the only code present.
  2. check all freeze frame data, To see the circumstances in which the Check Engine Light was illuminated
  3. Clear the code, then take your vehicle to a road test to see if the code reappears.
  4. After this inspection is complete, inspect the transmission and all wiring connections.
  5. Finally, use the scan tool to monitor the transmission information while driving, such as solenoid operation or condition of the transmission valve body.

Common Mistakes When Diagnosing P0700

There are 2  common mistakes you might make when diagnosing the P0700 code they are:

Under Diagnose

Do not assume that your vehicle is repaired just because the code has been cleared. Small problems can quickly become big ones.

Over Diagnose

Not getting all the codes and data set causing the P0700 and recommending extensive repairs — when a wire replacement, TCM, or sensor repair would have solved it.

What Repairs Can Fix The P0700 Code?

  1. Restoring the Transmission Valve Body
  2. Replacing the Transmission Control Module (TCM)
  3. Replacing a Malfunctioning or Broken Solenoid
  4. Repairing any Faulty Wires

How To Fix The P0700 Code?

P0700 code fixes

This section will provide you with a list of DIY steps that you could try to fix the P0700 code. This is done to reduce labor costs. If none of these DIYs work, take your vehicle to the nearest shop to have professional mechanics perform certain manufacturer tests to identify the issue.

Here’s a summary of all DIY steps you can try to fix a P0700 code:

1. Use An OBD-II Tool To Confirm The Code

To resolve any check engine light error code, the first step is to confirm that it exists. You can connect an OBD II device to your vehicle’s computer.

It will instantly display any errors and previous errors you have fixed. If you see the P0700 code, you can proceed to test the following DIY and see if it fixes the error.

2. Inspect The transmission control module

To eliminate the P0700 code, you can inspect and repair the transmission control module. This module is usually located in the back of your transmission. If you have trouble finding it, you can refer to the owner’s manual of your vehicle, which will give you detailed instructions.

Quickly do a visual inspection to check for damage to the transmission control module or its electrical connections. After identifying any damages, you can replace the transmission control unit.

To avoid buying the wrong part, ensure that you compare the new part with the original one.

3. Clear the Code

After replacing the transmission control module, you need to reconnect the OBDII scanner again to the vehicle’s computer and remove any inactive errors. After doing this, the P0700 error code should disappear. A second scan is recommended to confirm that the issue has been resolved.

If you are still having trouble with your car after trying the DIY solution, take it to the nearest shop to have your vehicle inspected by a mechanic to identify the root cause.

How much does it cost to fix the P0700 code?

on average, it will cost between 300 to 900 to fix the P0700 code depending on your vehicle type and model and the extent of the repair. Repair costs for a defective transmission control module can run from $840 to $900. If the problem is with the transmission, the repair cost can go up to $5000 for some vehicles. If your problem is limited to the transmission valve body, repairs can cost anywhere from $320 to $900.

Also Read: P0456 Code – Meaning, Causes, Symptoms & Fixes

Frequently Asked Questions

What Is The P0700 code?

The P0700 OBD-II scanner error code is a generic code applicable to all vehicles with OBD-II. It refers to the transmission control module (TCM) in the automatic transmission. The P0700 is an Informational code because it indicates a general fault and not a specific fault.

Can I drive with the P0700 code?

If your vehicle has the P0700 trouble code, you should avoid driving the vehicle. It could become stuck in one gear if driven, posing a safety risk for you and others around you.

How much does it cost to fix the P0700 code?

P0700 Repair costs will vary depending on what caused the P0700 code to be triggered. Repair costs for a problem caused by a defective transmission control module can run from $840 up to $900.

Conclusion

P0700 is a diagnostic code (DTC) for “Transmission Control System Malfunction.” Commonly, P0700 can be seen with one or more shift code solenoid codes. It could be simple fluid flow due to a transmission failure or even a transmission leak.

It is common to find metal flakes in transmission fluid when it is bad. These metal flakes can clog the shift solenoids and the transmission valve bodies and may result in the P0700 error code. If excessive metal buildup is detected in the transmission, it could be due to mechanical wear. This can indicate that the transmission should be rebuilt or replaced.

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