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Code C0606

Symptoms

• Warning light on the dashboard

• Loss of power steering assist

• Inaccurate steering response

Common Causes

• Faulty steering wheel angle sensor

• Damaged or corroded wiring/connectors

• Faulty control module

Glossary

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

Sensor: A device that detects or measures a physical property and records, indicates, or otherwise responds to it.

Related Codes

• C0607

• C0608

Laymans terms

This code means that the car's computer is having trouble reading the position of the steering wheel. It's like if your video game controller couldn't tell which way you were turning.

Explanation

The steering wheel angle sensor is responsible for determining the position of the steering wheel and sending this information to the car's computer. A 'circuit low' error indicates that the signal from the sensor is weaker than expected.

Technical description

The C0606 code is triggered when the vehicle's control module detects a voltage level from the steering wheel angle sensor that is below the expected range. This could be due to a faulty sensor, wiring issues, or a problem with the control module itself.

Diagnosis steps

• Use an OBD-II scanner to confirm the code.

• Inspect the wiring and connectors for damage or corrosion.

• Test the steering wheel angle sensor for proper operation.

Repair procedures

• Replace the steering wheel angle sensor if faulty.

• Repair or replace damaged wiring/connectors.

• Reprogram or replace the control module if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Screwdriver set

Estimated repair cost

$150 - $500

Difficulty level

Moderate

Commonly affected vehicles

• Chevrolet Silverado

• GMC Sierra

• Cadillac Escalade

Preventive measures

• Regularly check and maintain electrical connections.

• Avoid exposure to moisture and corrosive elements.

• Schedule routine vehicle inspections.

Error code type

Sensor Issue

User experience recommendations

• Avoid driving at high speeds until the issue is resolved.

• Consult with a professional mechanic for accurate diagnosis.

Warranty information

Repairs may be covered under vehicle warranty if the vehicle is still within the warranty period.

Historical data

This code is commonly associated with vehicles that have electronic steering systems and has been more prevalent with increased use of electronic steering aids.

Urgency level

Moderate – While not immediately dangerous, it can affect steering performance and should be addressed promptly.

Legal and safety notice

Driving with a faulty steering angle sensor can compromise vehicle handling and safety. It is advisable to have the vehicle inspected and repaired by a qualified technician.

Testing conditions

• Vehicle ignition in the 'ON' position.

• Steering wheel in neutral position.

Component location

The steering wheel angle sensor is typically located near the steering column, behind the steering wheel.

FAQs

Q: Can I drive with a C0606 code?
A: It's not recommended to drive for long periods with this code as it can affect steering performance.

Q: How do I reset the C0606 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is fixed, the code should not return.

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