P1514 code — how to fix error fast

If you get a P1514 code after a diagnostic check of your car, it’s a red flag that something may be wrong with the throttle input system. While this isn’t a cause for concern as big as engine-related troubles, it can consequently also affect engine performance if left unaddressed for too long.

You shouldn’t underestimate the aftermath of this code, which is why our team decided to lead the way. We’ll give you an overview of the P1514 code meaning and list the main reasons behind the code’s activation, as well as list some diagnostic and fixing methods you can use to avoid dealing with the code’s greatest threats.

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What does the P1514 code mean?

The P1514 code is a DTC that indicates a problem with the Throttle Actuator Control (TAC) system. The TAC is responsible for regulating the throttle opening in response to the driver’s input. Understanding this code is important because it can cause a number of issues with the vehicle’s performance and safety.

If you leave this code unattended for as little as a week or two, you may begin to experience rough RPM fluctuations, hesitation or harsh acceleration, reduced fuel economy, and the “check engine” light.

What causes the P1514 code?

There are more reasons than one as to why this code may have appeared in your car, and that makes it crucial to diagnose the culprit of the code on time. We’ll also help you with this as we’ll dig into the problem by listing the most common reasons for the code:

Faulty Throttle Body

A faulty throttle body can cause the P1514 code to appear. The throttle body is responsible for regulating the airflow into the engine. If the throttle body is not functioning properly, it can cause a range of issues with the TAC system.

Damaged TAC module

The TAC module is the brain behind the TAC system. If the TAC module is damaged, it can cause problems with the throttle opening and trigger the P1514 code.

Malfunctioning accelerator pedal position (APP) sensor

The APP sensor is responsible for detecting the position of the accelerator pedal and sending signals to the TAC module. If the APP sensor is malfunctioning, it can cause problems with the TAC system and trigger the P1514 code.

Faulty wiring or connections

Faulty wiring or connections can also cause the P1514 code to appear. If there is an issue with the wiring or connections between the TAC module and the rest of the system, it can cause problems with the TAC system.

Which car models does the P1514 code affect the most?

The P1514 code can affect a range of car models, but some models are more likely to experience this problem than others. The following car models are more likely to be affected by the code:

• Cadillac Escalade: The Escalade is a luxury SUV that was first introduced in 1998. Some models are equipped with a drive-by-wire throttle system that can be prone to issues with the throttle actuator control module.
• Pontiac Aztek: The Aztek models from 2001 to 2005. Some models are equipped with a drive-by-wire throttle system that can be prone to issues that could trigger this code.
• Buick Rendezvous: The Rendezvous also shares the problem that Aztek has with a drive-by-wire throttle system that can be prone to issues with the throttle actuator control module.

How to diagnose the P1514 code

Diagnosing the P1514 code requires a few diagnostic steps. Here are some steps you can take to diagnose the code:

Step 1: Use a Scan Tool

The first step in diagnosing the P1514 code is to use a scan tool to retrieve the code. A scan tool will provide you with information about the code and help you identify the potential causes of the problem.

Inspect the throttle body

The next step is to inspect the throttle body for any signs of damage or wear. Check for any visible damage or wear on the throttle body and look for any signs of corrosion or buildup.

Check the TAC module

If there are no visible signs of damage to the throttle body, the next step is to check the TAC module. Use a multimeter to check for continuity and voltage at the TAC module.

Inspect the APP sensor

If the TAC module is functioning properly, the next step is to inspect the APP sensor. Use a multimeter to check for continuity and voltage at the APP sensor.

Check wiring and connections

If all of the above steps fail to identify the problem, the final step is to check the wiring and connections between the TAC module and the rest of the system. Look for any signs of damage or wear on the wiring and connections and check for continuity and voltage.

How to fix the P1514 code

Fixing the P1514 code will depend on the underlying cause of the problem, so that’s where the mentioned reasons and diagnostic methods come in handy. You can use this to uncover the reason behind the code and apply one of the following solutions afterward:

Replace a faulty throttle body

If the throttle body is faulty, it will need to be replaced. Replacing the throttle body can cost between $200 and $500, depending on the make and model of the vehicle, so you should ensure that you’ve thoroughly inspected it. It’s also possible to clean the throttle body which may save you the cost.

Replace the faulty TAC module

Replacing the TAC module is one of the worst options for your pocket since you’ll be looking at a repair bill worth from $300 to $800 for this type of replacement.

Malfunctioning APP sensor

If the APP sensor is malfunctioning, it will need to be replaced. Replacing the APP sensor can cost between $100 and $300, depending on the make and model of the vehicle.

Faulty wiring or connections

If there is an issue with the wiring or connections, they will need to be repaired or replaced. Repairing or replacing the wiring or connections can cost between $50 and $200, depending on the extent of the damage.

How to prevent the P1514 code

Preventing the P1514 code requires regular maintenance and care of the TAC system. Here are some preventative measures you can take:

• Regularly clean and maintain the throttle body
• Ensure that the TAC module is functioning properly
• Regularly inspect and maintain the APP sensor
• Check the wiring and connections for any signs of damage or wear

Using these methods may help you save yourself the cost and trouble of dealing with expensive throttle body repairs, and could make it easier to avoid the issue appearing again.

Our take

So, now you know everything there is to know about the code P1514 and the most likely reasons behind this OBD2 code. You could also witness some of the main reasons why it needs immediate response from a driver to take proper repair action and prevent further engine issues or poor throttle response that could eventually result in a bad accident and pose a safety risk.

To prevent all this, simply make sure to use our guide and turn to a trusted mechanic for any repairs that you aren’t capable of doing on your own.