The dreaded ABS and VDC warning lights illuminating your dashboard can be a frustrating experience, especially when they appear intermittently. This article delves into a persistent C1104 Nissan code on a 2008 Pro4X with 137,000 miles, outlining troubleshooting steps already taken and exploring potential solutions.
The vehicle in question has experienced intermittent ABS and VDC light activation for some time. Initial attempts to resolve the issue involved replacing both front ABS sensors, applying dielectric grease, and sealing the connections. This provided a temporary fix, but the problem resurfaced with the onset of colder and wetter weather conditions. The lights often triggered when temperatures dropped below 30 degrees Fahrenheit, during wet or icy road conditions, after extended idling, or following a wheel well wash.
Several diagnostic steps have already been undertaken. A multimeter test confirmed 12V at each wheel speed sensor connector and consistent resistance readings across all four sensors when disconnected. Wheel bearings have been thoroughly checked and ruled out as the culprit. Visual and tactile inspection of the wiring harnesses revealed no apparent damage. Despite these efforts, the C1104 code, specifically related to the left front wheel speed sensor, persists. While other codes have been cleared successfully, the C1104 stubbornly remains after multiple attempts.
Given the intermittent nature of the problem and the specific conditions under which it occurs, several potential causes remain. Moisture ingress, despite the preventative measures taken, could still be affecting the left front sensor or its wiring. Corrosion within the connector, even if not visually apparent, could be disrupting the signal. A less likely but possible cause is a faulty ABS control module, although this is typically less common.
Further diagnostics should focus on the left front wheel speed sensor circuit. This includes a thorough inspection of the wiring harness for any signs of damage, chafing, or corrosion, paying particular attention to areas where the harness might be exposed to the elements or subject to movement. Checking the continuity and resistance of the wiring between the sensor and the ABS module can help pinpoint any breaks or shorts in the circuit. Testing the sensor itself, even though it’s new, might reveal a defective unit. Finally, consulting a qualified technician with access to advanced diagnostic tools might be necessary to identify and resolve the persistent C1104 code.
While the C1104 Nissan code points towards the left front wheel speed sensor circuit, intermittent issues can be challenging to diagnose. A systematic approach, focusing on potential points of failure within that circuit, is crucial to effectively resolving the problem and restoring the proper function of the ABS system.
