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 » C0051

Code C0051

Symptoms

• Stability control warning light on

• ABS warning light on

• Inaccurate steering feedback

Common Causes

• Faulty steering angle sensor

• Poor electrical connection

• Damaged wiring harness

Glossary

OBD-II: On-Board Diagnostics, a system for self-diagnosing and reporting vehicle issues.

Steering Angle Sensor: A sensor that measures the angle of the steering wheel.

Related Codes

• C0050

• C0052

Laymans terms

This code means there's a problem with the car's steering sensor, which helps the car know which way the wheels are pointing.

Explanation

The C0051 code indicates an issue with the steering angle sensor, which is crucial for the vehicle's stability control system.

Technical description

C0051 is a diagnostic trouble code (DTC) for 'Left Front Wheel Speed Sensor Circuit Range/Performance.' It suggests that the steering angle sensor is not providing accurate data to the vehicle's control modules.

Diagnosis steps

• Check for any other related codes.

• Inspect the steering angle sensor and its connections.

• Test the wiring harness for continuity.

Repair procedures

• Replace the faulty steering angle sensor.

• Repair or replace damaged wiring.

• Ensure all electrical connections are secure.

Tools required

• OBD-II scanner

• Multimeter

• Screwdriver set

Estimated repair cost

$150 - $400

Difficulty level

Moderate

Commonly affected vehicles

• Toyota Camry

• Honda Accord

• Ford Fusion

Preventive measures

• Regular maintenance checks

• Ensure steering components are clean

• Avoid harsh driving conditions

Error code type

Sensor Issue

User experience recommendations

• Have the vehicle inspected by a professional.

• Avoid driving in harsh conditions until repaired.

Warranty information

Check with the manufacturer for warranty coverage on electronic components.

Historical data

This code has been associated with steering issues in vehicles with electronic stability control systems.

Urgency level

Moderate – It should be addressed soon to ensure vehicle safety.

Legal and safety notice

Driving with this issue may compromise vehicle safety systems.

Testing conditions

• Vehicle on a flat surface

• Steering wheel centered

Component location

The steering angle sensor is typically located near the steering column.

FAQs

Q: Can I drive with a C0051 code?
A: It's not recommended as it affects the vehicle's stability control.

Q: How do I reset the C0051 code?
A: After repairs, use an OBD-II scanner to clear the code.

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

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