C1751 Continuous Electric Current to Height Control Compressor

OBD2 Code: C1751

Description: Continuous electric current to height control compressor.

Definition: This code indicates that there is a continuous or excessive electric current being sent to the height control compressor, which may suggest an electrical fault or issue with the air suspension system’s compressor circuit. This can lead to improper functioning of the vehicle’s height adjustment system.

C1751 – Continuous Electric Current to Height Control Compressor

Severity: Moderate

Common Causes

C1751 – Continuous Electric Current to Height Control Compressor

Common Causes:

• Faulty height control compressor
• Short circuit in the wiring harness
• Defective height control compressor relay
• Corroded or loose electrical connections related to the height control compressor system

 

Common Misdiagnosis

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OBD2 Code: C1751

Description: Continuous Electric Current to Height Control Compressor

Common Misdiagnosis: Replacing the height control compressor without checking for electrical issues such as wiring faults or relay problems.

 

Common Diagnostic Steps

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OBD2 Code: C1751 – Continuous Electric Current to Height Control Compressor

Description: This code indicates an issue with the continuous electric current being supplied to the height control compressor, which is part of the vehicle’s suspension system.

Common Diagnostic Steps:

• Check for any blown fuses related to the height control system and replace if necessary.
• Inspect the wiring and connectors leading to and from the height control compressor for any signs of damage or corrosion.
• Test the relay associated with the height control compressor for proper operation.
• Use a multimeter to measure voltage at the compressor connector to ensure it is receiving power when activated.
• Examine the air lines connected to the compressor for leaks or blockages that may affect its performance.
• If equipped, use a scan tool to check for additional codes that might indicate other issues within the suspension system.
• Consult vehicle-specific repair manuals or technical service bulletins (TSBs) for known issues related to this code on your specific make and model.