The largest online repair guide library for every car

About us
Contact support
FAQ
Sign up
Sign in

2015 Forte LX ABS and ESC Lights On - Speed Sensor?

0

Mike T. · rep 0 · May 25, 2:10 AM · 1 replies · solved · Question

Vehicle: 2015 Kia Forte LX

I've got a 2015 Kia Forte LX, and both the ABS (Anti-lock Braking System) and Electronic Stability Control (ESC) warning lights came on my dashboard a few days ago and haven't gone off. The car drives fine, but I'm worried about safety features not working correctly. I haven't noticed any changes in braking performance, but the lights are definitely concerning.

I read online it could be a wheel speed sensor. Is this a common problem for this model year and trim? I haven't had any recent work done on the brakes or wheels, and the car has about 85,000 miles on it.

What should I look for, and is this something I can diagnose myself before taking it to a shop?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 2:10 AM

0

ClearTheCode admin answer:

It's very common for the ABS and ESC warning lights to illuminate simultaneously when there's an issue with a wheel speed sensor. These systems rely heavily on accurate wheel speed data to function correctly. When one sensor fails or provides incorrect readings, both systems can be disabled.

Here's what you should know:

  1. How Wheel Speed Sensors Work:

    • Each wheel has a sensor that monitors its rotational speed and sends this data to the ABS/ESC control module. This data is crucial for preventing wheel lock-up during braking (ABS) and maintaining vehicle stability during turns or slippery conditions (ESC).

  2. Common Causes of Failure:

    • Sensor Malfunction: The sensor itself can fail electronically.
    • Damaged Wiring: The wiring leading to the sensor can get damaged from road debris, corrosion, or wear and tear.
    • Contamination: Dirt, rust, or metal shavings on the sensor or tone ring (the part it reads) can interfere with its signal.
    • Bearing Issues: A worn wheel bearing can sometimes affect the tone ring's position, leading to incorrect readings.

  3. Symptoms of a Faulty Sensor:

    • Illumination of ABS and ESC warning lights (as you're experiencing).
    • Potentially, a loss of ABS and ESC functionality.
    • Sometimes, an inaccurate speedometer reading (though less common for just one sensor).

  4. OBD Codes to Look For:

    • A diagnostic scan tool capable of reading ABS codes will likely reveal a code pointing to a specific wheel speed sensor. Common Kia-related codes might include:
      • C1200: Front Wheel Speed Sensor (General)
      • C1201: Front Left Wheel Speed Sensor
      • C1202: Front Right Wheel Speed Sensor
      • C1203: Rear Left Wheel Speed Sensor
      • C1204: Rear Right Wheel Speed Sensor

When to See a Shop: While the car may seem to drive fine, the ABS and ESC systems are critical safety features. It's highly recommended to have your 2015 Kia Forte LX diagnosed by a professional mechanic as soon as possible. They can use a specialized scan tool to read the specific fault codes, pinpoint the exact faulty sensor, and inspect the wiring and tone ring for damage. Driving without these systems functioning correctly can compromise your safety, especially in emergency braking or adverse weather conditions.

Menu

Help & account