2010 Chevy Equinox LS 2.4L AWD C0035 Code: Left Front Speed Sensor Issue with ABS and Stability Trac Alerts
I own a 2010 Chevrolet Equinox LS with a 2.4L engine and AWD. The vehicle is displaying Diagnostic Trouble Code (DTC) C0035, which indicates a problem with the left front wheel speed sensor. When starting the car, the ABS warning light illuminates. After driving for a few minutes, I experience a rough idle at times. Subsequently, the service Stability Trac, service Traction Control, and AWD Off messages appear. The vehicle behaves as if the ABS system is constantly active until these service alerts show up—after which it seems to function normally. I have already replaced the left front wheel speed sensor, and the codes were cleared. However, the same C0035 issue returns shortly after startup. I've confirmed that the wheel hub itself is not faulty. This behavior is perplexing, and I'm seeking expert advice on how to properly diagnose and resolve this recurring issue.
Note that DTC C0035 has several suffixes that provide more specific diagnostic information: - C0035 06: Left Front Wheel Speed Sensor Circuit Low Voltage/Open - C0035 0F: Left Front Wheel Speed Sensor Circuit Signal Erratic - C0035 18: Left Front Wheel Speed Sensor Circuit Low Signal Amplitude - C0035 5A: Left Front Wheel Speed Sensor Circuit Not Plausible These suffixes are critical for accurate diagnosis. A professional scan tool can display the full DTC details and show actual voltage readings from the EBCM/PCM, which helps identify whether the issue is sensor-related or a wiring/connection problem.