Cruise Control Input Circuit Malfunction
The P0575 code indicates a problem in the cruise control input circuit, typically involving the brake switch or clutch switch. The powertrain control module (PCM) detects an incorrect voltage signal from the cruise control system, preventing the system from engaging or disengaging properly. This can be caused by a faulty brake light switch, wiring issues, or a malfunctioning cruise control module.
01. Most Common Causes
- Faulty brake light switch
- Damaged wiring or connectors in the cruise control circuit
- Malfunctioning cruise control module
- Blown fuse related to cruise control
02. Symptoms You Will Notice
- Cruise control does not engage
- Cruise control disengages unexpectedly
- Brake lights may not work properly
- Check Engine Light illuminated
03. Step-by-Step Diagnosis
Step 1: Use an OBD2 scanner to confirm the code and check for additional codes.
Step 2: Inspect the brake light switch for proper operation and adjustment.
Step 3: Check the wiring and connectors for damage, corrosion, or loose connections.
Step 4: Test the cruise control module and related fuses.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
Yes, but cruise control will be disabled. Ensure brake lights work properly for safety.
How much does it cost to fix?▼
Typically $50-$150 for parts and labor, depending on the cause.