P0575 Cruise Control Related Malfunction

Introduction

Cruise control is a feature that allows drivers to maintain a constant speed without having to keep their foot on the accelerator pedal. However, when the cruise control system malfunctions, it can be frustrating and even dangerous. One of the most common cruise control-related malfunctions is the P0575 error code. In this article, we will discuss what the P0575 error code means, its symptoms, and how to fix it.

P0575 is a diagnostic trouble code (DTC) that indicates a malfunction in the cruise control system. This code is triggered when the powertrain control module (PCM) detects a problem with the cruise control brake switch circuit. The brake switch is a safety feature that disengages the cruise control system when the brake pedal is pressed. When the PCM detects a problem with the brake switch circuit, it will disable the cruise control system and trigger the P0575 error code.

The most common symptom of P0575 is the inability to use the cruise control system. When the error code is triggered, the cruise control system will be disabled, and the driver will not be able to set or maintain a constant speed. In some cases, the check engine light may also illuminate.

Fixing the P0575 error code requires identifying and repairing the underlying issue with the cruise control brake switch circuit. Here are the steps to follow:

Step 1: Check the Brake Light Switch

The first step in fixing the P0575 error code is to check the brake light switch. The brake light switch is located near the brake pedal and is responsible for turning on the brake lights when the pedal is pressed. If the brake light switch is faulty, it can trigger the P0575 error code. To check the brake light switch, follow these steps:

Locate the brake light switch near the brake pedal.
Disconnect the electrical connector from the switch.
Use a multimeter to test the switch for continuity.
If the switch does not have continuity, it is faulty and needs to be replaced.

Step 2: Check the Wiring

If the brake light switch is not the issue, the next step is to check the wiring. The wiring for the cruise control brake switch circuit runs from the brake light switch to the PCM. If there is a break or short in the wiring, it can trigger the P0575 error code. To check the wiring, follow these steps:

Inspect the wiring for any visible damage or wear.
Use a multimeter to test the wiring for continuity.
If there is a break or short in the wiring, it will need to be repaired or replaced.

Step 3: Replace the PCM

If the brake light switch and wiring are not the issue, the problem may be with the PCM. The PCM is responsible for monitoring the cruise control brake switch circuit and triggering the P0575 error code when there is a problem. If the PCM is faulty, it may need to be replaced. However, this should only be done as a last resort after all other possible causes have been ruled out.

Conclusion

The P0575 error code can be frustrating, but it is usually easy to fix. By following the steps outlined in this article, you can identify and repair the underlying issue with the cruise control brake switch circuit. If you are unsure about any of the steps, it is always best to consult a professional mechanic.

FAQs

1. Can I still drive my car if the P0575 error code is triggered?

Yes, you can still drive your car if the P0575 error code is triggered. However, the cruise control system will be disabled, and you will not be able to use it until the issue is resolved.

2. How much does it cost to fix the P0575 error code?

The cost to fix the P0575 error code will depend on the underlying issue. If the problem is with the brake light switch or wiring, it may be a relatively inexpensive fix. However, if the PCM needs to be replaced, it can be more costly.

3. Can I fix the P0575 error code myself?

If you have experience working on cars and the necessary tools, you may be able to fix the P0575 error code yourself. However, if you are unsure about any of the steps or do not have the necessary tools, it is best to consult a professional mechanic.

How to Fix P0575 Cruise Control Related Malfunction