C1260 – OBD-II DTC

OBD-II DTC C1260 – Speed Wheel RR Comparison Failure

DTC C1260 meaning

DTC C1260 refers to a “Speed Wheel RR Comparison Failure.” This diagnostic trouble code indicates that the vehicle’s onboard diagnostic system has detected a discrepancy in the speed readings from the right rear wheel speed sensor compared to the other wheel speed sensors. This can affect the vehicle’s stability control and anti-lock braking system (ABS) performance.

DTC C1260 symptoms

Common symptoms associated with DTC C1260 may include:

• Illumination of the ABS warning light on the dashboard
• Decreased effectiveness of the ABS system
• Unusual braking behavior, such as locking up or skidding
• Inconsistent traction control operation
• Possible activation of the traction control warning light

DTC C1260 causes

Several factors can lead to the triggering of DTC C1260, including:

• Faulty right rear wheel speed sensor
• Damaged wiring or connectors related to the wheel speed sensor
• Issues with the ABS control module
• Incorrectly installed or malfunctioning brake components
• Wheel bearing problems affecting sensor readings

DTC C1260 seriousness

DTC C1260 is considered a serious issue as it can compromise the vehicle’s braking and stability control systems. If left unaddressed, it may lead to reduced vehicle control, especially in adverse driving conditions, increasing the risk of accidents.

How to diagnose DTC C1260

To diagnose DTC C1260, follow these steps:

1. Use an OBD-II scanner to confirm the presence of DTC C1260.
2. Inspect the right rear wheel speed sensor and its wiring for any visible damage or disconnections.
3. Check the resistance and output voltage of the wheel speed sensor to ensure it is functioning correctly.
4. Examine the ABS control module for any additional fault codes that may provide further insight.
5. Test drive the vehicle to see if the code reappears and monitor the wheel speed readings using a scan tool.

How to fix DTC C1260 step-by-step instructions

To fix DTC C1260, follow these steps:

1. Inspect and repair any damaged wiring or connectors related to the right rear wheel speed sensor.
2. If the wheel speed sensor is faulty, replace it with a new one.
3. Ensure that the sensor is properly installed and aligned.
4. Check the ABS control module for any software updates or faults and address them as necessary.
5. Clear the DTC using an OBD-II scanner and perform a test drive to verify that the issue is resolved.

How to erase DTC C1260

To erase DTC C1260, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the ignition without starting the engine.
3. Navigate to the “Erase Codes” or “Clear DTCs” option on the scanner.
4. Confirm the action to clear the trouble codes.
5. Disconnect the scanner and start the vehicle to ensure the code does not reappear.

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