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 » C0094

Code C0094

Symptoms

• ABS warning light on

• Reduced braking performance

• Unusual noises during braking

Common Causes

• Faulty brake sensor

• Damaged wiring or connectors

• Malfunctioning brake control module

Glossary

OBD-II: On-Board Diagnostics, a standardized system in vehicles for self-diagnosis and reporting.

ABS: Anti-lock Braking System, a safety system that prevents wheels from locking up during braking.

Related Codes

• C0095

• C0096

Laymans terms

This code means there's a problem with one of the sensors that helps the car stop safely. It's like if your game controller's buttons weren't working right.

Explanation

The C0094 code indicates an issue with the vehicle's brake system sensor.

Technical description

C0094 is a chassis code related to the brake system, specifically indicating a malfunction in one of the brake sensors, which could affect the vehicle's ability to monitor and control braking functions accurately.

Diagnosis steps

• Check for other related codes.

• Inspect brake sensor wiring and connectors.

• Test the functionality of the brake sensor.

Repair procedures

• Replace faulty brake sensor.

• Repair or replace damaged wiring.

• Reprogram or replace brake control module.

Tools required

• OBD-II scanner

• Multimeter

• Brake sensor replacement tools

Estimated repair cost

$100 - $300

Difficulty level

Moderate

Commonly affected vehicles

• Toyota Camry

• Honda Accord

• Ford Focus

Preventive measures

• Regular brake system maintenance

• Inspect brake sensors periodically

• Ensure connectors are secure and clean

Error code type

Sensor Issue

User experience recommendations

• Do not ignore the warning light.

• Get the brake system checked by a professional.

• Avoid hard braking until the issue is resolved.

Warranty information

Check with your vehicle manufacturer for warranty coverage on brake components.

Historical data

C0094 has been reported in vehicles with high mileage or those exposed to harsh conditions.

Urgency level

High – This issue can affect braking performance and safety.

Legal and safety notice

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

Testing conditions

• Vehicle on a flat surface

• Engine running

Component location

The brake sensor is typically located near the wheel hub or brake caliper.

FAQs

Q: Can I drive with the C0094 code?
A: It's not recommended to drive with this code as it can affect braking safety.

Q: How can I reset the C0094 code?
A: After fixing the issue, you can reset the code using an OBD-II scanner.

Last updated: Oct 28, 2025 • Source: internal database

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