C1176 Left Rear Speed Wheel Sensor Circuit Open

Definition: The OBD2 code C1176 indicates that there is an open circuit detected in the left rear wheel speed sensor. This means that the vehicle’s electronic control unit (ECU) has identified a break or disconnection in the electrical circuit of the left rear wheel speed sensor, which is crucial for monitoring and controlling the anti-lock braking system (ABS).

C1176 – Left Rear Speed Wheel Sensor Circuit Open

Typical Severity: Moderate

Common Causes

C1176 – Left Rear Speed Wheel Sensor Circuit Open

Common Causes:

• Faulty left rear speed wheel sensor
• Corroded or damaged wiring/connectors in the left rear speed wheel sensor circuit
• Loose or poor connection at the left rear speed wheel sensor
• Issues with the ABS control module

 

Common Misdiagnosis

OBD2 Code: C1176

Description: Left Rear Speed Wheel Sensor Circuit Open

Common Misdiagnosis: Replacing the wheel speed sensor without checking for wiring issues or connector problems.

 

Common Diagnostic Steps

• OBD2 Code: C1176
• Description: Left Rear Speed Wheel Sensor Circuit Open
• Common Diagnostic Steps:
  • Inspect the left rear wheel speed sensor and its wiring for any visible damage or disconnection.
  • Check the connector at the wheel speed sensor for corrosion or poor connection.
  • Use a multimeter to test the continuity of the wheel speed sensor circuit. Ensure there is no open circuit.
  • Verify that the wheel speed sensor is receiving proper voltage from the ABS control module.
  • If equipped, use an OBD2 scanner to monitor live data from the wheel speed sensors while rotating each wheel to ensure proper signal output.
  • Replace the left rear wheel speed sensor if it fails any of these tests.
  • If all checks are normal, inspect and test the ABS control module as a last resort.