c1138 4 wheel active steer circuit
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C1138 4 Wheel Active Steer Circuit
OBD2 Code: C1138
Description: 4 Wheel Active Steer Circuit
Definition: This code indicates a malfunction in the circuit responsible for controlling the four-wheel active steering system. The system is designed to improve vehicle handling and stability by adjusting the angle of all four wheels.
c1138 4 wheel active steer circuit
Code: C1138
Description: 4 wheel active steer circuit
Severity: Moderate
Common Causes
c1138 – 4 wheel active steer circuit
Description: The c1138 OBD2 code indicates a problem in the 4 wheel active steer circuit.
Common Causes:
- Faulty 4 wheel active steer system components
- Wiring issues in the active steer circuit
- Poor electrical connections related to the active steer system
- Defective sensors or control modules associated with the 4 wheel active steer system
Common Misdiagnosis
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OBD2 Code: C1138
Description: 4 Wheel Active Steer Circuit
Common Misdiagnosis: Replacing the steering angle sensor without checking for wiring issues or connector problems.
Common Diagnostic Steps
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OBD2 Code: C1138
Description: 4 Wheel Active Steer Circuit
Common Diagnostic Steps:
- Verify the code using an OBD-II scanner.
- Inspect the wiring and connectors for damage or corrosion in the active steer circuit.
- Check for any blown fuses related to the steering system.
- Test the functionality of the 4 wheel active steer control module.
- Examine the sensors associated with the active steering system for proper operation.
- Perform a continuity test on all relevant circuits and connections.
- If necessary, update or reprogram the vehicle’s ECU/PCM software as per manufacturer guidelines.
- Clear codes and perform a road test to ensure proper function after repairs are completed.