What is an OBD2 code?

An OBD2 (On-Board Diagnostics) code is a diagnostic trouble code (DTC) generated by your vehicle's computer system when it detects a problem. These codes help identify specific issues with your vehicle's engine, transmission, emissions, or other systems.

How do I read OBD2 codes?

To read OBD2 codes, you'll need an OBD2 scanner. Plug it into your vehicle's OBD2 port (usually located under the dashboard), turn your key to the 'ON' position, and follow your scanner's instructions to retrieve the codes. Each code starts with a letter (P, B, C, or U) followed by four numbers.

What do the different types of OBD2 codes mean?

OBD2 codes are categorized by their first letter: P (Powertrain) for engine and transmission issues, B (Body) for interior systems like airbags, C (Chassis) for mechanical systems like brakes, and U (Network) for computer and module communication problems.

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Home » OBD2 Codes » C0573

Code C0573

Symptoms

• ABS warning light on

• Brake warning light on

• Reduced braking performance

Common Causes

• Faulty brake pressure sensor

• Damaged wiring or connectors

• Faulty ABS control module

Glossary

ABS: Anti-lock Braking System

OBD-II: On-Board Diagnostics, Second Generation

Related Codes

• C0574

• C0575

Laymans terms

This means that the car's computer is not getting a signal from the brake pressure sensor. It's like when a light bulb is not working because it's not connected properly.

Explanation

The C0573 code indicates that there is an issue with the brake pressure sensor circuit, specifically an open circuit or no connection.

Technical description

The brake pressure sensor monitors the hydraulic pressure in the brake system. An open circuit means there is a break in the electrical path, preventing the sensor from sending data to the vehicle's control module.

Diagnosis steps

• Inspect the brake pressure sensor and its wiring for damage.

• Check the connectors for corrosion or loose connections.

• Test the sensor's electrical output with a multimeter.

Repair procedures

• Replace the brake pressure sensor if faulty.

• Repair or replace damaged wiring or connectors.

• Replace the ABS control module if necessary.

Tools required

• Multimeter

• OBD-II scanner

• Wrench set

Estimated repair cost

$100 - $300

Difficulty level

Moderate

Commonly affected vehicles

• Chevrolet Silverado

• GMC Sierra

• Cadillac Escalade

Preventive measures

• Regularly inspect brake system components.

• Keep electrical connectors clean and secure.

• Perform routine maintenance checks.

Error code type

Sensor Issue

User experience recommendations

• Do not ignore the ABS warning light.

• Have the brake system inspected by a professional.

• Avoid hard braking until the issue is resolved.

Warranty information

Check with the vehicle manufacturer for specific warranty coverage on brake system components.

Historical data

This code has been associated with issues in vehicles with advanced brake systems, particularly those with integrated ABS modules.

Urgency level

High – Brake system issues can affect vehicle safety.

Legal and safety notice

Driving with a malfunctioning brake system can be dangerous and may violate vehicle safety regulations.

Testing conditions

• Vehicle ignition on

• Brake pedal depressed

Component location

The brake pressure sensor is typically located near the master cylinder or within the ABS module.

FAQs

Q: Can I drive with the C0573 code?
A: It's not recommended to drive with this code active, as it may affect braking performance.

Q: How do I reset the ABS warning light?
A: Fix the underlying issue first, then use an OBD-II scanner to clear the code.

Last updated: Jun 8, 2026 • Source: internal database

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