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 » C0093

Code C0093

Symptoms

• Stability control warning light on

• Reduced vehicle stability

• Unusual braking behavior

Common Causes

• Faulty wheel speed sensor

• Defective stability control module

• Damaged wiring or connectors

Glossary

Stability Control: A system that helps keep the vehicle stable during turns and slippery conditions.

Wheel Speed Sensor: A sensor that measures the speed of each wheel to help control braking and stability.

Related Codes

• C0035

• C0040

Laymans terms

This code means there's a problem with the car's stability control system. It's like when you're trying to balance on one foot and you start to wobble.

Explanation

The C0093 code indicates a malfunction in the vehicle's stability control system, which helps keep the car stable during turns and slippery conditions.

Technical description

The C0093 code is related to the vehicle's stability control system, which may involve sensors, actuators, or control modules that help maintain vehicle stability by adjusting braking and engine power.

Diagnosis steps

• Check for any other related codes

• Inspect wheel speed sensors and wiring

• Test the stability control module

Repair procedures

• Replace faulty wheel speed sensor

• Repair or replace damaged wiring

• Replace defective stability control module

Tools required

• OBD-II scanner

• Multimeter

• Basic hand tools

Estimated repair cost

$150 - $500

Difficulty level

Moderate

Commonly affected vehicles

• Ford Explorer

• Chevrolet Tahoe

• Toyota Camry

Preventive measures

• Regularly inspect wheel speed sensors

• Maintain proper tire pressure

• Avoid harsh driving conditions

Error code type

Sensor Issue

User experience recommendations

• Drive cautiously until repaired

• Avoid high-speed turns

• Consult a professional mechanic

Warranty information

Check with the manufacturer for warranty coverage on stability control components.

Historical data

This code has been associated with stability control issues in vehicles since stability control systems became standard.

Urgency level

Moderate – It is important to address this issue to maintain vehicle safety and handling.

Legal and safety notice

Ignoring this code may lead to reduced vehicle control and increase the risk of accidents.

Testing conditions

• Dry, flat surface

• Controlled environment

Component location

The stability control components are typically located near the vehicle's wheels and under the hood.

FAQs

Q: Can I drive with the C0093 code?
A: It's possible to drive, but it's not recommended as it may affect vehicle stability.

Q: How do I reset the stability control light?
A: Fix the underlying issue and use an OBD-II scanner to clear the code.

Last updated: Jan 15, 2026 • Source: internal database

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