Kaiyi E5 ABS Light Stays On: What a Wheel Speed Sensor Fault Means

Why the ABS light stays on

On your Kaiyi E5, the ABS light staying on continuously means the ABS controller has logged a fault and switched off ABS and, depending on the system, stability control. The most common culprit is a wheel speed sensor or its signal ring: dirt, metal debris, a cracked reluctor ring, a chafed wire, or a loose connector can all interrupt the wheel-speed signal. Less often, the cause can be a weak battery or charging voltage, a failing wheel bearing, or an ABS pump/module issue.

What to check first

• Scan the ABS codes with a capable diagnostic tool and note which wheel is affected.
• Inspect that wheel’s sensor and ring for dirt, damage, corrosion, and correct air gap.
• Check the sensor harness for chafing, broken wires, and water in the connector.
• Watch live wheel-speed data while rolling slowly; a dropout or erratic reading confirms a signal problem.
• Test battery/charging voltage before condemning the ABS module.

Repair the identified fault, clear the codes, and verify the light stays off after a road test. Do not replace the ABS module on a guess.

Is it safe to keep driving?

If only the ABS light is on and the brakes feel normal, you can usually drive cautiously to a workshop, but remember that ABS will not assist you in an emergency and stability control may be reduced. If the red brake warning light is also on, the pedal feels soft or long, or you hear grinding, stop safely and arrange a tow. Get the fault diagnosed promptly; a wheel speed sensor issue is often simple and inexpensive to fix.

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