C1871 – OBD-II DTC

OBD-II DTC C1871 – Air Suspension Gate Solenoid Output Circuit Short To Battery

DTC C1871 meaning

DTC C1871 refers to a diagnostic trouble code indicating a short circuit in the air suspension gate solenoid output circuit to the battery. This code is specific to vehicles equipped with air suspension systems, which utilize solenoids to control the air supply to the suspension components. A short to battery suggests that there is an unintended connection between the solenoid circuit and the battery voltage, which can lead to improper operation of the air suspension system.

DTC C1871 symptoms

Common symptoms associated with DTC C1871 may include:

• Warning lights on the dashboard, such as the air suspension warning light.
• Inconsistent or erratic behavior of the air suspension system.
• Vehicle may sit too high or too low due to improper air pressure.
• Possible audible clicking or buzzing from the air suspension components.
• Decreased ride quality or handling issues.

DTC C1871 causes

Several factors can lead to the occurrence of DTC C1871, including:

• Wiring issues, such as frayed or damaged wires in the solenoid circuit.
• Faulty air suspension gate solenoid.
• Corrosion or poor connections at the solenoid or related connectors.
• Short circuits caused by moisture intrusion or foreign objects.
• Malfunctioning control module that manages the air suspension system.

DTC C1871 seriousness

The seriousness of DTC C1871 can vary based on the symptoms and the vehicle’s condition. However, it is generally considered a moderate to high priority issue because:

• It can affect the vehicle’s ride quality and handling.
• It may lead to further damage to the air suspension system if not addressed.
• Ignoring the issue can result in safety concerns, especially in adverse driving conditions.

How to diagnose DTC C1871

To diagnose DTC C1871, follow these steps:

1. Use an OBD-II scanner to confirm the presence of DTC C1871.
2. Inspect the wiring and connectors associated with the air suspension gate solenoid for damage or corrosion.
3. Check for any additional DTCs that may provide more context to the issue.
4. Test the air suspension gate solenoid for proper operation using a multimeter.
5. Verify the voltage and ground at the solenoid connector to ensure proper power supply.
6. Examine the control module for any faults or programming issues.

How to fix DTC C1871 step-by-step instructions

To fix DTC C1871, follow these step-by-step instructions:

1. Disconnect the vehicle’s battery to ensure safety while working on the electrical system.
2. Inspect and repair any damaged wiring or connectors in the air suspension gate solenoid circuit.
3. Replace the air suspension gate solenoid if it is found to be faulty during testing.
4. Clean any corrosion from connectors and ensure all connections are secure.
5. Reconnect the battery and clear the DTC using an OBD-II scanner.
6. Test drive the vehicle to ensure the air suspension system operates correctly and the DTC does not reappear.

How to erase DTC C1871

To erase DTC C1871, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the vehicle’s ignition without starting the engine.
3. Navigate to the DTC menu on the scanner and select the option to clear or erase codes.
4. Confirm the action and wait for the scanner to complete the process.
5. Disconnect the scanner and start the vehicle to ensure the code does not return.

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