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 » C0098

Code C0098

Symptoms

• ABS warning light on

• Traction control light on

• Loss of stability control

Common Causes

• Faulty wheel speed sensor

• Damaged wiring or connector

• Malfunctioning ABS module

Glossary

ABS: Anti-lock Braking System

OBD-II: On-Board Diagnostics II

Related Codes

• C0035

• C0040

Laymans terms

This code means there's a problem with one of the sensors in your car that helps it know if it's slipping or skidding. It's like when you try to walk on ice and your feet slide around.

Explanation

The code C0098 indicates an issue with a sensor related to the vehicle's stability control system.

Technical description

C0098 is a generic chassis code related to the wheel speed sensor circuit, which is part of the vehicle's electronic stability control system. This sensor helps the car's computer understand how fast each wheel is turning to maintain control and stability.

Diagnosis steps

• Check for any visible damage to the wheel speed sensor.

• Inspect the wiring and connectors for any signs of wear or damage.

• Use a diagnostic scanner to read live data from the sensor.

Repair procedures

• Replace the faulty wheel speed sensor.

• Repair or replace damaged wiring or connectors.

• Reset the ABS system and clear the code.

Tools required

• OBD-II scanner

• Multimeter

• Socket set

Estimated repair cost

$100 - $300

Difficulty level

Moderate

Commonly affected vehicles

• Chevrolet Silverado

• Ford F-150

• Toyota Camry

Preventive measures

• Regularly inspect wheel speed sensors.

• Avoid driving in harsh conditions that may damage sensors.

• Keep the vehicle's undercarriage clean.

Error code type

Sensor Issue

User experience recommendations

• Drive cautiously until the issue is resolved.

• Avoid sudden maneuvers that could cause loss of control.

Warranty information

Check if the vehicle's warranty covers sensor repairs.

Historical data

C0098 has been a common issue in vehicles with electronic stability control systems as they age.

Urgency level

Moderate – This issue should be addressed soon to ensure vehicle stability and safety.

Legal and safety notice

Driving with a malfunctioning stability control system can increase the risk of accidents, especially in slippery conditions.

Testing conditions

• Dry and level surface

• Vehicle at operating temperature

Component location

The wheel speed sensor is located near the wheel hub assembly.

FAQs

Q: What happens if I ignore this code?
A: Ignoring this code can lead to reduced vehicle stability and increased risk of skidding.

Q: Can I drive with the C0098 code?
A: While you can drive, it's not recommended as it may compromise safety in slippery conditions.

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

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