C1095 – OBD-II DTC

OBD-II DTC C1095 – ABS Hydraulic Pump Motor Circuit Failure

DTC C1095 meaning

DTC C1095 refers to a diagnostic trouble code indicating a failure in the ABS hydraulic pump motor circuit. This code is specific to the Anti-lock Braking System (ABS) and suggests that the hydraulic pump motor, which is crucial for maintaining brake pressure and preventing wheel lock-up during braking, is not functioning correctly. The issue may stem from electrical problems, mechanical failures, or communication errors within the ABS system.

DTC C1095 symptoms

Common symptoms associated with DTC C1095 may include:

• Illumination of the ABS warning light on the dashboard
• Loss of ABS functionality, leading to potential wheel lock-up during hard braking
• Increased stopping distances
• Unusual noises from the ABS module or hydraulic pump
• Possible activation of the traction control or stability control warning lights

DTC C1095 causes

Several factors can lead to the occurrence of DTC C1095, including:

• Faulty ABS hydraulic pump motor
• Damaged wiring or connectors in the ABS hydraulic pump circuit
• Corrosion or poor connections at the ABS module
• Defective ABS control module
• Low brake fluid levels or contamination in the brake fluid

DTC C1095 seriousness

DTC C1095 is considered a serious issue as it directly affects the vehicle’s braking system. The failure of the ABS hydraulic pump can lead to a loss of anti-lock braking functionality, increasing the risk of accidents, especially in emergency braking situations. It is crucial to address this code promptly to ensure safe vehicle operation.

How to diagnose DTC C1095

To diagnose DTC C1095, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the C1095 code.
2. Inspect the ABS hydraulic pump motor and its wiring for visible damage or corrosion.
3. Check the ABS control module for any additional trouble codes that may provide more context.
4. Test the ABS hydraulic pump motor for proper operation using a multimeter.
5. Verify the integrity of the power and ground circuits to the ABS pump motor.
6. Examine brake fluid levels and quality, ensuring they meet manufacturer specifications.

How to fix DTC C1095 step-by-step instructions

To fix DTC C1095, follow these step-by-step instructions:

1. Clear the DTC using an OBD-II scanner and take the vehicle for a test drive to see if the code returns.
2. If the code reappears, inspect the ABS hydraulic pump motor and replace it if faulty.
3. Repair or replace any damaged wiring or connectors in the ABS circuit.
4. Clean or replace corroded connections at the ABS module.
5. Test and, if necessary, replace the ABS control module.
6. Ensure brake fluid levels are adequate and replace contaminated fluid.
7. After repairs, clear the DTC again and perform a test drive to confirm the issue is resolved.

How to erase DTC C1095

To erase DTC C1095, 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 scanner’s menu 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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