P0573 - Cruise Control/Brake Switch A Circuit High Input (Common in 2015-2019 Ford Escape and 2014-2018 Kia Sorento)

Quick Answer

P0573 means: P0573 indicates a high voltage issue in the brake switch circuit affecting cruise control functionality.

Fix: Check and replace faulty components Cost: $100 - $200 Time: 90-180 minutes

Can I drive with P0573? It's crucial to address this issue immediately to ensure safe vehicle operation.

Common Questions

What does P0573 mean and how does it affect my car?

The P0573 code indicates that your vehicle's cruise control system is malfunctioning due to a high voltage signal from the brake switch. This can lead to your cruise control not functioning properly, which may affect your ability to maintain speed on long drives. Ignoring this code can lead to further complications and safety risks.

What are the most common causes of P0573 and how much does it cost to fix?

The most common cause of the P0573 code is a faulty brake switch, which can be replaced for about $100 to $200. Wiring issues may also cause this code, with repairs ranging from $150 to $300. In rare cases, a malfunctioning ECM may be the cause, leading to costs between $500 to $1,200.

Can I drive my car with P0573 or should I stop immediately?

While you can technically drive your vehicle with the P0573 code, it is not advisable. The malfunctioning cruise control can lead to safety issues, especially on highways. It's recommended to have the issue diagnosed and repaired as soon as possible.

How can I diagnose P0573 myself using GeekOBD APP?

To diagnose the P0573 code using the GeekOBD APP, connect the app to your vehicle's OBD2 port. Retrieve the fault codes and check the freeze frame data for context. Use the app's diagnostic tools to perform component testing, focusing on the brake switch and related wiring.

What vehicles are most commonly affected by P0573?

The P0573 code is commonly found in vehicles like the 2015-2019 Ford Escape, 2014-2018 Kia Sorento, and various models from other manufacturers. Always refer to service bulletins for specific recalls or technical service advisories related to your vehicle.

How can I prevent P0573 from happening again?

Regular maintenance checks can help prevent the P0573 code from recurring. Ensure that the brake switch and wiring are inspected during routine services. Keeping the electrical connectors clean and free from corrosion can also contribute to the longevity of the cruise control system.

What is P0573?

The P0573 code indicates a malfunction in the cruise control system, specifically concerning the brake switch circuit. This code is triggered when the Engine Control Module (ECM) detects a high voltage signal from the brake switch. Essentially, the brake switch is responsible for signaling when the brakes are engaged, which should deactivate the cruise control. If the ECM receives a voltage reading that is higher than expected, it raises this fault code. For car owners, this means that your cruise control may not function properly, which can lead to safety concerns while driving. Ignoring this code could lead to further complications, such as additional fault codes or even a complete failure of the cruise control system. It's important to address this issue promptly to ensure your vehicle operates safely and efficiently. If you're experiencing symptoms related to this code, such as an unresponsive cruise control or a persistent check engine light, it’s advisable to seek a professional diagnosis. Don't overlook the significance of this code, as it can indicate potential issues with related systems, including braking functionality.

System: P - Powertrain (Engine, Transmission, Emissions)

Symptoms

Common symptoms when P0573 is present:

  • Check engine light stays on constantly, indicating a persistent issue that needs attention.
  • Cruise control becomes unresponsive, making it impossible to maintain speed on highways, affecting driving comfort and safety.
  • Brake lights may stay on even when not engaged, which can confuse other drivers and increase the risk of accidents.
  • The car may exhibit erratic behavior in acceleration, leading to unexpected speed changes when cruise control is engaged.
  • Inconsistent engine performance can occur, potentially leading to decreased fuel economy and increased emissions.

Possible Causes

Most common causes of P0573 (ordered by frequency):

  1. The most common cause is a faulty brake switch, responsible for signaling the ECM when the brakes are engaged. This accounts for about 60% of cases.
  2. Wiring issues, such as damaged or frayed wiring in the brake switch circuit, can cause incorrect voltage readings, leading to the P0573 code.
  3. Corrosion at the connectors or poor connections in the brake switch circuit can also trigger this code, making regular inspections vital to prevent issues.
  4. Less common, but serious, is a malfunctioning ECM itself, which can misinterpret signals from the brake switch circuit.
  5. A rare cause could be an issue with the cruise control module, which may require replacement if all other components check out.

P0573 Repair Costs

Cost Breakdown by Repair Type

Brake Switch Replacement

Replacing the faulty brake switch to restore proper function.

  • Total: $100 - $200
  • Success rate: 90%
Wiring Repair

Repairing or replacing damaged wiring in the circuit.

  • Total: $150 - $300
  • Success rate: 80%
ECM Replacement

In cases where the ECM is faulty, replacing it may be necessary.

  • Total: $500 - $1,200
  • Success rate: 75%
Money-Saving Tips for P0573
  • Start with the most common and least expensive repairs first
  • Use GeekOBD APP to confirm diagnosis before replacing expensive parts
  • Consider preventive maintenance to avoid future occurrences
  • Compare prices for OEM vs aftermarket parts based on your needs
  • Address the issue promptly to prevent more expensive secondary damage

Diagnostic Steps

Professional P0573 Diagnosis Process

Follow these systematic steps to accurately diagnose P0573. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion (5-10 minutes)

Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion (5-10 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 2: Step 2: OBD2 scan using GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes)

Step 2: OBD2 scan using GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 3: Step 3: Component testing - Use a multimeter to test the brake switch and its circuit for proper voltage and continuity (20-30 minutes)

Step 3: Component testing - Use a multimeter to test the brake switch and its circuit for proper voltage and continuity (20-30 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 4: Step 4: System function test - Verify the proper operation of the cruise control system after repairs and clear codes (10-15 minutes)

Step 4: System function test - Verify the proper operation of the cruise control system after repairs and clear codes (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm that the repair resolved the issue (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm that the repair resolved the issue (15-20 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.

Important Notes

  • Always verify the repair with GeekOBD APP after completing diagnostic steps
  • Clear codes and test drive to ensure the problem is resolved
  • Address underlying causes to prevent code recurrence

Real Repair Case Studies

Case Study 1: Ford Escape P0573 Diagnosis and Repair

Vehicle: 2016 Ford Escape, 45,000 miles

Problem: Customer reported that the cruise control was non-functional and the check engine light was on.

Diagnosis: After running an OBD2 scan with GeekOBD APP, the P0573 code was detected. A visual inspection revealed a faulty brake switch.

Solution: The brake switch was replaced, and the system was tested to ensure proper operation.

Cost: $150 (including parts and labor)

Result: The cruise control was fully operational after the repair, and the check engine light was cleared.

Case Study 2: Kia Sorento P0573 Issue Resolved

Vehicle: 2017 Kia Sorento, 30,000 miles

Problem: Customer experienced intermittent cruise control functionality and noted that the brake lights remained on.

Diagnosis: Diagnostic testing indicated a high voltage reading from the brake switch, confirming the P0573 code.

Solution: Repaired the wiring harness leading to the brake switch and replaced the switch itself.

Cost: $250 (including parts and labor)

Result: All systems functioned normally post-repair, and the customer reported satisfaction with the repair outcome.

Diagnose P0573

Use GeekOBD APP for professional diagnosis!

  • Real-time data monitoring
  • Advanced diagnostic features
  • Step-by-step repair guidance
  • Professional-grade analysis
Download GeekOBD APP Get MOBD Adapter

Code Information

Code: P0573
System: Powertrain (Engine, Transmission, Emissions)
Severity: HIGH
Category: Engine Codes