C1894 Air Suspension Left Rear Height Sensor Circuit Open

OBD2 Code: C1894

Description: Air suspension left rear height sensor circuit open.

Definition: This code indicates that there is an open circuit detected in the left rear height sensor of the air suspension system. The vehicle’s control module has identified a fault with the electrical circuit connected to this specific sensor, which may affect the operation of the air suspension system.

C1894 – Air Suspension Left Rear Height Sensor Circuit Open

Typical Severity: Critical

Common Causes

C1894 – Air Suspension Left Rear Height Sensor Circuit Open

Common Causes:

• Faulty left rear height sensor
• Broken or damaged wiring in the circuit
• Poor electrical connection at the sensor or control module
• Corrosion in the wiring or connectors
• Defective air suspension control module

 

Common Misdiagnosis

OBD2 Code: C1894

Description: Air Suspension Left Rear Height Sensor Circuit Open

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

 

Common Diagnostic Steps

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OBD2 Code: C1894

Description: Air Suspension Left Rear Height Sensor Circuit Open

• Inspect the air suspension left rear height sensor for any visible damage or disconnection.
• Check the wiring harness and connectors for signs of corrosion, damage, or loose connections.
• Use a multimeter to test the continuity of the circuit from the sensor to the control module.
• Verify that there is proper voltage supply to the height sensor using a voltmeter.
• If applicable, check for any blown fuses related to the air suspension system.
• Consult vehicle-specific repair manuals or databases for detailed wiring diagrams and specifications.
• If no faults are found in the wiring or connections, consider replacing the height sensor itself.
• Clear any stored codes and perform a road test to ensure that repairs have resolved the issue.