P1633 code — how to fix error fast

We all know the bad feeling you certainly get when diagnosing the P1633 code and similar OBD2 error codes. While it’s a bad sign for your car’s powertrain if the code starts with the “P”, the good news is – you can fix the problem pretty fast as long as you know what you are doing.

Sometimes you won’t even have to take your car to the mechanic to diagnose the problem behind the code, but in this case, it’s important to know about the P1633 code meaning. To help you with that, our team will give you a brief overview of the main reasons behind the code, ways you can fix it and prevent it, as well as discuss why the code may appear more often on certain car models.

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What does the P1633 code mean?

When a car’s onboard computer detects a problem with the throttle control system, it will trigger the P1633 code. This code indicates that there is an issue with the throttle position sensor, which is responsible for monitoring the position of the throttle pedal and transmitting that information to the engine control module.

It’s important to understand the P1633 code because it can cause several problems for drivers. If left unfixed, it can lead to reduced engine performance, increased fuel consumption, and even engine failure in some cases.

What causes the P1633 code?

Symptoms that may be present with the P1633 code include engine misfires, reduced acceleration, and difficulty starting the car. It all depends on the exact cause, so looking for symptoms that pinpoint one of the following causes of the code can be a great help:

Faulty fuel level sensor

The fuel level sensor may be faulty or damaged, causing inaccurate readings or no readings at all. If that’s the case, it can affect the performance of the combustion process and the throttle position sensor which triggers the code P1633.

Wiring issues

There may be problems with the wiring or connections in the fuel level sensor circuit, such as broken wires, loose connections, or corroded terminals.

Faulty throttle position sensor

The throttle position sensor (TPS) is a device that measures the position of the throttle in an internal combustion engine. It works by sending a voltage signal to the powertrain control module (PCM), which then adjusts the fuel and air mixture accordingly.

If the TPS is faulty or damaged, it can cause a variety of problems with the engine’s performance, including triggering the P1633 code. This is because the PCM relies on accurate readings from the TPS to control the fuel system.

Low battery voltage

Low battery voltage can cause a variety of issues with the vehicle’s electrical system, including problems with the fuel level sensor circuit. If the battery is not providing enough power, it can cause the PCM to malfunction and trigger the P1633 code. This can also lead to other codes appearing, such as P0562 or P0563, which are related to low battery voltage.

Which car models does the P1633 code affect the most?

While the P1633 code can occur in any car that has a throttle control system, some car models are more prone to this issue than others. Typically, cars with older or worn throttle position sensors are more likely to experience this problem.

Some of the car models that are known to have issues with the P1633 code include:

• Ford F-150: The Ford F-150 is a popular pickup truck that has been known to have issues with the fuel level sensor circuit, which can trigger the P1633 code.
• Dodge RAM: The Dodge Ram is a full-size pickup truck that has also been known to have issues with the fuel level sensor circuit and trigger the P1633 code.
• Honda Civic: The Honda Civic is a compact car that has been known to experience issues with the throttle position sensor (TPS), which can lead to problems with the fuel level sensor circuit and trigger the P1633 code.

How to diagnose the P1633 code

Diagnosing the P1633 code requires a thorough understanding of the car’s throttle control system and the use of specialized diagnostic tools. Still, we’ll give you an idea of the main diagnostic methods since some of them can be done on your own without professional help:

Use an OBD2 scanner

The first step in diagnosing the P1633 code is to use an OBD-II scanner to read the codes stored in the vehicle’s onboard computer. This will give you information about any other codes that may be present, as well as data on the fuel level sensor circuit and other relevant components.

Check the fuel level sensor circuit

Once you have scanned the vehicle’s onboard computer, you should inspect the fuel level sensor circuit for any signs of damage or malfunction. This includes checking the wiring, connections, and fuel level sensor itself for any issues that may be causing the P1633 code.

Test the throttle position sensor

If there are no obvious issues with the fuel level sensor circuit, you may need to test the TPS to ensure that it is functioning properly. This involves using a voltmeter to measure the voltage output of the TPS and comparing it to factory specifications.

How to fix the P1633 code

Once you’ve diagnosed the P1633 code, it’s time to fix the problem. Here are some potential fixes for each cause of the code:

Replace the throttle position sensor

If the TPS is faulty or damaged, it may need to be replaced with a new one. This can help to ensure accurate readings and prevent issues with the fuel level sensor circuit that triggers the P1633 code.

Clean corroded connections

If there is corrosion on the electrical connections in the fuel level sensor circuit, they may need to be cleaned or replaced. This can help to improve conductivity and prevent the P1633 code from reappearing.

Replace the fuel level sensor

If the fuel level sensor is faulty or damaged, it may need to be replaced with a new one. This can help to ensure accurate readings and prevent the P1633 code from reappearing.

Repair damaged wiring

If there are issues with the wiring or connections in the fuel level sensor circuit, they may need to be repaired or replaced. This can help to restore proper communication between components and prevent the P1633 code from appearing.

How to prevent the P1633 code

Preventing the P1633 code requires proper maintenance of the car’s throttle control system. Here are some preventative measures you can take:

• Regularly inspect the wiring and connectors in the throttle control system for any damage or wear.
• Keep the battery connections clean and tight.
• Perform routine maintenance on the car’s throttle position sensor.
• Avoid harsh driving that can cause excessive wear on the throttle control system.

By following these preventative measures, you can reduce the likelihood of experiencing the P1633 code and ensure that your car’s throttle control system is functioning properly.

Our take

Overall, the P1633 code can be a serious issue for drivers, but with the right knowledge and tools, it can be diagnosed and fixed. By taking preventative measures and properly maintaining your car’s throttle control system, you can avoid this problem altogether and ensure that your car is running at its best.

With this in mind, we hope that our expert takes on the code may help you figure it out and fix the root cause of the issue in your car.