C1874 – OBD-II DTC

OBD-II DTC C1874 – Air Suspension RF Air Spring Solenoid Output Circuit Open

DTC C1874 meaning

DTC C1874 refers to a diagnostic trouble code indicating an issue with the right front air spring solenoid output circuit in a vehicle’s air suspension system. Specifically, it signifies that the circuit is open, meaning there is a break or disconnection preventing proper operation of the solenoid that controls the air spring on the right front side of the vehicle.

DTC C1874 symptoms

Common symptoms associated with DTC C1874 may include:

• Uneven ride height on the right front side of the vehicle
• Warning lights on the dashboard related to the air suspension
• Increased noise from the air suspension system
• Vehicle may feel unstable or bouncy during driving
• Possible air suspension system failure or inability to adjust ride height

DTC C1874 causes

Several factors can lead to the occurrence of DTC C1874, including:

• Faulty air spring solenoid
• Wiring issues such as frayed or broken wires in the solenoid circuit
• Corrosion or poor connections at the solenoid or related connectors
• Faulty air suspension control module
• Air leaks in the suspension system affecting pressure readings

DTC C1874 seriousness

The seriousness of DTC C1874 can vary, but it is generally considered a moderate to high priority issue. If left unaddressed, it can lead to:

• Increased wear on suspension components
• Compromised vehicle handling and safety
• Potential for further damage to the air suspension system

How to diagnose DTC C1874

To diagnose DTC C1874, follow these steps:

1. Use an OBD-II scanner to confirm the presence of DTC C1874.
2. Inspect the wiring and connectors related to the right front air spring solenoid for damage or corrosion.
3. Test the solenoid for proper operation using a multimeter.
4. Check for any additional DTCs that may provide more context to the issue.
5. Examine the air suspension control module for faults or issues.

How to fix DTC C1874 step-by-step instructions

To fix DTC C1874, follow these steps:

1. Repair or replace any damaged wiring or connectors found during diagnosis.
2. If the solenoid is faulty, replace it with a new one.
3. Clear any corrosion from connectors and ensure they are securely connected.
4. Test the air suspension control module and replace it if necessary.
5. Recheck the system for proper operation and ensure the ride height is correct.

How to erase DTC C1874

To erase DTC C1874, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Navigate to the option to clear or erase trouble codes.
3. Confirm the action to erase the codes.
4. Disconnect the scanner and start the vehicle to check if the code reappears.

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