How to Diagnose and Solve P1573 Speed Control Command Switch Out of Range Low Issues

As a seasoned car expert, I understand the frustration that comes with encountering a **P1573 Speed Control Command Switch Out of Range Low** issue. This problem can be a real headache, but don’t worry, I’m here to help you diagnose and solve it.

Understanding the P1573 Code

Before we dive into the solution, let’s first understand what the **P1573 code** means. This code is a generic powertrain diagnostic trouble code (DTC) that indicates a problem with the speed control command switch. When the switch is out of range low, it means the signal being sent to the engine control module (ECM) is below the acceptable voltage range.

What Causes the P1573 Code?

Several factors can trigger the P1573 code. These include a faulty speed control command switch, damaged wiring, or a malfunctioning ECM.

Diagnosing the P1573 Code

Now that we understand the problem, let’s move on to diagnosing it.

Step 1: Check the Speed Control Command Switch

The first step in diagnosing the P1573 code is to inspect the **speed control command switch**. Look for any signs of damage or wear. If the switch is faulty, it will need to be replaced.

Step 2: Inspect the Wiring

Next, check the wiring connected to the speed control command switch. Look for any signs of damage, such as frayed wires or loose connections. If you find any issues, they will need to be repaired or replaced.

Step 3: Test the ECM

If the switch and wiring are in good condition, the problem may lie with the ECM. To test the ECM, you will need a professional diagnostic tool. If the ECM is faulty, it will need to be replaced.

Solving the P1573 Code

After diagnosing the problem, it’s time to solve it.

Step 1: Replace the Speed Control Command Switch

If the speed control command switch is faulty, replace it with a new one. Make sure to follow the manufacturer’s instructions when installing the new switch.

Step 2: Repair or Replace Damaged Wiring

If you found any damaged wiring during your inspection, repair or replace it as necessary.

Step 3: Replace the ECM

If the ECM is faulty, it will need to be replaced. This is a complex task that should be done by a professional.

Conclusion

Dealing with a **P1573 Speed Control Command Switch Out of Range Low** issue can be challenging, but with the right knowledge and tools, you can diagnose and solve it. Remember, if you’re not comfortable performing these tasks yourself, it’s always best to seek help from a professional.

FAQs

1. What does the P1573 code mean?

The P1573 code is a diagnostic trouble code that indicates a problem with the speed control command switch. When the switch is out of range low, it means the signal being sent to the engine control module is below the acceptable voltage range.

2. What causes the P1573 code?

The P1573 code can be caused by a faulty speed control command switch, damaged wiring, or a malfunctioning engine control module.

3. How do I solve the P1573 code?

To solve the P1573 code, you will need to replace the faulty speed control command switch, repair or replace any damaged wiring, and possibly replace the engine control module.