P0708 code — how to fix error fast

If you got a code P0708 from a diagnostic scan of your car, things could look pretty dire really fast. The crucial thing is to act on time to repair the issue causing this code, so it makes sense that the first thing you should do is learn more about the P0708 code meaning.

Well, our team is there to help you out if you aren’t much of a car guy, and we don’t blame you for not knowing the code’s implications even if you are. It gets hard to track all these codes, but with this guide, you will be ready to figure out the cause, set up a diagnosis, and fix the issue at its core.

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What does the P0708 code mean?

The P0708 code is a generic powertrain code that indicates a problem with the transmission range sensor circuit. This sensor is responsible for sending signals to the vehicle’s transmission control module (TCM) to determine the current gear position of the transmission. When the TCM receives an invalid signal from the transmission range sensor circuit, it may trigger the P0708 code.

It’s important to fix the P0708 code because it can cause serious problems with the vehicle’s transmission. For instance, it can cause the transmission to shift improperly or not shift at all. This can lead to decreased fuel efficiency, increased wear and tear on the vehicle, and even a complete transmission failure.

What causes the P0708 code?

There are several potential causes of the P0708 code, including a malfunctioning transmission range sensor or simply damaged electrical connections. Symptoms that may be present with the code include the check engine light turning on, the transmission not shifting properly, and the vehicle going into limp mode. To properly fix the code, you’ll need to know more about each possible cause, so here’s a more detailed list:

Bad transmission range sensor

This is the most common cause of the P0708 code. Over time, the transmission range sensor can become worn or damaged, leading to an invalid signal being sent to the TCM.

Damaged wiring

The wiring harness that connects the transmission range sensor to the TCM can become damaged due to exposure to heat, moisture, or physical damage.

Faulty TCM

The TCM may be faulty and unable to receive or interpret the signals from the transmission range sensor circuit.

Blown fuses

A blown fuse in the transmission control circuit can cause a loss of power to the TCM and trigger the P0708 code.

Which car models does the P0708 code affect the most?

The P0708 code can affect a wide range of vehicles, but some car models are more likely to experience this issue. It mostly happens with cars that share a similar type of transmission range sensor which is prone to failure, so we had to take a closer look at the models that are reported to be more prone to this issue:

• Honda Civic: A number of Honda Civic owners have reported experiencing the P0708 code. The issue seems to be most common in 2001-2005 models.
• Ford F-150: Some Ford F-150 owners have also reported issues with the P0708 code. These reports seem to be more common in newer models, particularly those manufactured after 2015.
• Toyota Corolla: The P0708 code has been reported by a number of Toyota Corolla owners. The issue seems to affect models manufactured between 2003 and 2008.

How to diagnose the P0708 code

The easiest way to diagnose the P0708 code is by using an OBD-II code reader or scanner. However, there are other ways you can diagnose the code that will work for particular reasons behind the code. So, it’s best to have a complete picture of testing methods that include the following:

Performing visual inspection

A visual inspection of the transmission range sensor and its wiring can sometimes reveal problems such as corroded connectors, frayed wires, or damaged components.

Checking the transmission range sensor voltage

A multimeter can be used to test the voltage and resistance of the transmission range sensor and its wiring. This can help identify any issues with the sensor or circuit.

Checking the sensor and its components

If all else fails, replacing the transmission range sensor may be necessary. This should only be done after other potential causes have been ruled out.

How to fix the P0708 code

Fixing the P0708 code can vary depending on the cause of the problem. The cost of fixing the P0708 code can range from a few hundred dollars to over a thousand dollars depending on the severity of the problem and the parts needed for the repair. Here are some potential fixes for each cause:

Repairing or replacing damaged wiring

Sometimes, the issue with the transmission range sensor circuit can be caused by damaged or frayed wiring. In this case, repairing or replacing the wiring may be all that’s needed to fix the problem.

Replacing the transmission range sensor

If the sensor itself is faulty or damaged, it may need to be replaced. This involves removing the old sensor and installing a new one in its place.

Reprograming the car’s TCM

In some cases, reprogramming the car’s computer system may be necessary to fix issues related to the transmission range sensor circuit.

Checking or replacing affected solenoids

The P0708 code can sometimes be caused by a malfunctioning solenoid in the transmission control system. In this case, cleaning or replacing the solenoid may be necessary.

How to prevent the P0708 code

To prevent the P0708 code from appearing, drivers can take several preventative measures. These include:

• Regular maintenance
• Proper driving habit
• Proper storage

Regularly maintaining the vehicle’s transmission system can help prevent issues with the transmission range sensor circuit, and it can help you avoid getting the code P0708 again.

Our take

In conclusion, the P0708 code is a serious issue that drivers should not ignore. By understanding what the code means, what causes it, and how to fix it, drivers can take the necessary steps to ensure that their vehicle is running smoothly.

As always, it is recommended to seek professional help if you are unsure about how to diagnose or fix the P0708 code, but we hope that this guide will suffice until then.