ABS and VDC Lights On Simultaneously in 2017 Murano

ClearTheCode admin answer:

When both the ABS (Anti-lock Braking System) and VDC (Vehicle Dynamic Control, Nissan's term for Electronic Stability Control) lights illuminate simultaneously, it typically indicates a fault within a system that both rely on. These systems are interconnected, as VDC uses ABS components (like wheel speed sensors) to function.

Common Causes:

1. Wheel Speed Sensors: This is the most common cause. Each wheel has a sensor that monitors its rotational speed. If one or more sensors fail, become dirty, or their wiring is damaged, the ABS and VDC systems lose crucial data, triggering both warning lights. Common OBD-II codes related to this are C1101 (Front Right), C1102 (Front Left), C1103 (Rear Right), C1104 (Rear Left).
2. ABS Module Failure: Less common, but the ABS control module itself can fail. This module processes data from the wheel speed sensors and controls the ABS pump and valves. A fault here would disable both systems.
3. Brake Fluid Level: While less likely to trigger both simultaneously without a brake warning light, extremely low brake fluid can sometimes affect system performance.
4. Steering Angle Sensor: The VDC system also uses a steering angle sensor to determine the driver's intended direction. A fault in this sensor can disable VDC and sometimes trigger related ABS warnings.
5. Wiring Issues: Damaged wiring or poor connections to any of the aforementioned sensors or the ABS module can also cause these lights to appear.

When to See a Shop:

• It's crucial to have this diagnosed promptly. While your regular brakes may still work, the ABS and VDC safety features are likely disabled, which can be dangerous in emergency braking or slippery conditions.
• A professional shop can connect a diagnostic scanner to retrieve specific trouble codes (DTCs) from the ABS/VDC module. These codes will pinpoint the exact sensor or component that has failed, allowing for an accurate and efficient repair.