C1231 Steering Angle Sensor Circuit Malfunction

OBD2 Code: C1231

Description: Steering Angle Sensor Circuit Malfunction

Definition: The OBD2 code C1231 indicates a malfunction in the steering angle sensor circuit. This sensor is responsible for measuring the position of the steering wheel and sending this data to various vehicle systems, such as stability control and traction control. A fault in this circuit can lead to improper functioning of these systems.

C1231 – Steering Angle Sensor Circuit Malfunction

Severity: Moderate

Common Causes

C1231 – Steering Angle Sensor Circuit Malfunction

Common Causes:

• Defective steering angle sensor
• Loose or corroded wiring connections to the sensor
• Faulty wiring harness
• Low battery voltage affecting the sensor’s operation
• Software issues in the vehicle’s electronic control unit (ECU)

 

Common Misdiagnosis

OBD2 Code: C1231

Description: Steering Angle Sensor Circuit Malfunction

Common Misdiagnosis: Replacing the steering angle sensor without checking for wiring issues or poor connections in the circuit.

 

Common Diagnostic Steps

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OBD2 Code: C1231

Description: Steering Angle Sensor Circuit Malfunction

• Verify the steering angle sensor is properly connected and not damaged.
• Check for any blown fuses related to the steering system.
• Inspect wiring and connectors for signs of damage, corrosion, or disconnection.
• Use a scan tool to read data from the steering angle sensor and verify its output is within specifications.
• Perform a recalibration of the steering angle sensor using an appropriate diagnostic tool if necessary.
• If applicable, check for any related codes that might indicate issues with other components in the stability control system.
• If no faults are found in the wiring or connections, consider replacing the steering angle sensor itself.