C1185 – OBD-II DTC

OBD-II DTC C1185 – ABS Power Relay Output Circuit Failure

DTC C1185 meaning

DTC C1185 refers to an issue with the ABS (Anti-lock Braking System) power relay output circuit. This diagnostic trouble code indicates that the ABS control module has detected a malfunction in the power relay that supplies voltage to the ABS system. The power relay is crucial for the proper functioning of the ABS, as it controls the electrical supply to the system components.

DTC C1185 symptoms

Common symptoms associated with DTC C1185 may include:

• Illumination of the ABS warning light on the dashboard
• Loss of ABS functionality during braking
• Increased stopping distances
• Potential activation of the traction control warning light
• Unusual noises from the ABS module during operation

DTC C1185 causes

Several factors can lead to the occurrence of DTC C1185, including:

• Faulty ABS power relay
• Wiring issues, such as shorts or open circuits in the relay output circuit
• Corrosion or poor connections in the electrical connectors
• Defective ABS control module
• Blown fuses related to the ABS system

DTC C1185 seriousness

DTC C1185 is considered a serious issue as it directly affects the ABS functionality. The ABS is essential for maintaining vehicle control during emergency braking situations. If the ABS is not operational, the vehicle may experience wheel lockup, leading to a loss of control and increased risk of accidents. Therefore, it is important to address this code promptly.

How to diagnose DTC C1185

To diagnose DTC C1185, follow these steps:

1. Use an OBD-II scanner to confirm the presence of DTC C1185.
2. Inspect the ABS power relay for any visible damage or signs of failure.
3. Check the wiring and connectors associated with the ABS power relay for corrosion or loose connections.
4. Test the ABS power relay using a multimeter to ensure it is functioning correctly.
5. Examine the ABS control module for any faults or issues.
6. Clear the DTC and perform a road test to see if the code returns.

How to fix DTC C1185 step-by-step instructions

To fix DTC C1185, follow these steps:

1. Replace the faulty ABS power relay if it is determined to be defective.
2. Repair or replace any damaged wiring or connectors in the ABS power relay circuit.
3. Ensure all connections are clean and secure to prevent future issues.
4. Check and replace any blown fuses related to the ABS system.
5. If necessary, replace the ABS control module if it is found to be faulty.
6. After repairs, use an OBD-II scanner to clear the DTC and perform a road test to confirm the issue is resolved.

How to erase DTC C1185

To erase DTC C1185, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn the ignition key to the “On” position without starting the engine.
3. Access the diagnostic menu on the scanner and select the option to clear or erase trouble 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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