Geely Emgrand ABS Light Stuck On? Here’s What a Wheel Speed Sensor Can Do (and How to Check)

Why is the ABS light staying on?

When the ABS warning light on your Geely Emgrand stays on continuously, it means the ABS control module has detected a fault and has disabled the anti-lock braking system. In my experience, the most common culprit on Emgrand models is a wheel speed sensor failure — usually a dirty or corroded sensor, a damaged tone ring, or a broken wire in the sensor harness. The ABS module constantly compares rotational speed from all four wheels. When one sensor drops out or gives an erratic signal, the module turns on the warning light and stores a trouble code.

Which sensors and parts to check first

I always start by reading the diagnostic trouble codes (DTCs) with an OBD2 scanner that supports ABS. The code will often tell you which corner is causing the problem — for example, C0035 left front wheel speed sensor or C0040 right front. Once you know the side, here’s what I check in this order:

• Sensor connector and wiring: Look for chafed, cracked, or corroded wires near the wheel well or under the car. A loose connector is surprisingly common.
• Sensor tip: Remove the sensor and inspect the magnetic tip for metal debris or damage. Clean it with brake cleaner.
• Tone ring / reluctor ring: Check the toothed ring on the drive shaft or hub. Missing teeth, rust buildup, or a crack can produce an intermittent signal that sets the light.
• Sensor gap: Make sure the sensor is seated properly. An excessive air gap between the sensor and the ring kills the signal.
• Voltage and resistance test: If you own a multimeter, measure the resistance across the sensor terminals (usually 1–2 kOhm) and check for an AC voltage signal while slowly spinning the wheel.

In most cases, cleaning the sensor and ring, or replacing a damaged speed sensor, will turn the light off. But if the light returns, the issue could be a failing ABS control module or a faulty wheel bearing that allows too much play, physically moving the sensor away from the ring.

Is it safe to keep driving?

Here’s the honest answer: your normal brakes will still work, so you won’t be left without stopping power. However, the ABS, traction control, and hill-start assist will be disabled. That means in slippery or emergency braking situations, your wheels can lock up, and you may lose steering control. On a Geely Emgrand, a permanently lit ABS light is not something to ignore for long. I recommend getting it diagnosed within a week — and if you drove through deep water or mud recently, a simple sensor cleaning might fix it right away. If the light is flickering or you hear odd noises while braking, park it and get it towed to a shop.

This material is AI-generated and for informational purposes only — it does not replace an in-person diagnosis by a qualified mechanic.