2015-2019 Hyundai Sonata ABS Sensor: Why the ABS & Traction Lights Are On
A complete guide to diagnosing, replacing, and buying a used ABS wheel speed sensor for your 2015-2019 Hyundai Sonata.
- The primary symptom of failure is the ABS and Traction Control (ESC) warning lights turning on simultaneously.
- Be aware of a critical fire risk recall for the ABS *module* which can be confused with a sensor failure. Have any ABS light diagnosed immediately.
- When buying a used sensor, carefully inspect the full length of the wiring and the connector for damage, as this is a common failure point.
- Part numbers may fit both gasoline and hybrid models; always verify fitment with your VIN before purchasing.
Symptoms of a Failing ABS Wheel Speed Sensor
When an ABS wheel speed sensor fails, it typically gives clear warnings on your dashboard. Because multiple safety systems rely on this one part, you will usually see several lights appear at once.
- ABS Warning Light: This is the most common symptom. The ABS computer detects a missing or incorrect signal from one of the sensors and disables the system, turning on the warning light.
- Traction Control (TCS) or Electronic Stability Control (ESC) Light: These systems also use wheel speed data to detect wheel slip. When a sensor fails, these systems are also disabled, and their corresponding warning light will illuminate.
- Brake Warning Light: In some cases, the main red brake warning light may also come on.
- Erratic Behavior at Low Speeds: You might feel a brief grinding or pulsing from the brakes at low speeds as the ABS system incorrectly activates due to a faulty signal. 🎬 Watch: Top reasons your ABS and traction lights are on
Common Diagnostic Trouble Codes (DTCs)
To read these codes, you will need an OBD-II scanner that can access the ABS module (Chassis or 'C' codes). A basic code reader may not show them. The codes will pinpoint which sensor is failing.
| Code | Definition |
|---|---|
| C1200, C1201, C1202 | Front Left Wheel Speed Sensor Circuit Fault |
| C1203, C1204, C1205 | Front Right Wheel Speed Sensor Circuit Fault |
| C1206, C1207, C1208 | Rear Left Wheel Speed Sensor Circuit Fault |
| C1209, C1210, C1211 | Rear Right Wheel Speed Sensor Circuit Fault |
Known Issues, TSBs, and Recalls
While the sensors themselves are a common wear item, there are important official notices for the ABS system on the 2015-2019 Sonata that every owner should be aware of.
CRITICAL RECALL: ABS Module Fire Risk. Hyundai issued a major recall (including NHTSA campaign 20V520000 and others) because the ABS module itself can leak brake fluid internally, causing an electrical short. This can lead to an engine compartment fire, even when the car is parked and off. If your ABS light is on, it is critical to determine if the cause is a simple sensor or the dangerous module fault. Hyundai advises owners of affected vehicles to park outside and away from structures until the recall repair is performed.
Recall 134: ABS Warning Light Malfunction
For 2015-2016 Sonatas, Hyundai issued a recall (NHTSA 15V702000) because the ABS warning light might not illuminate when there is a system malfunction. This means your ABS could be disabled without you knowing it. The fix is a simple software update performed by a Hyundai dealer.
Buying a Used ABS Wheel Speed Sensor: What to Check
A used OEM sensor can be a reliable and cost-effective alternative to expensive new parts, especially when compared to cheap aftermarket sensors that can have poor accuracy or durability. Here’s what to inspect before buying.
- Verify the Part Number: This is the most important step. Match the part number from your old sensor to the used one. See our part number table below for details on front, rear, left, and right sensors.
- Inspect the Wiring Harness: Carefully examine the entire length of the wire. Look for any cuts, scrapes, or areas where the insulation is brittle or cracked. The pigtail connector is a common failure point. Do not buy a sensor with damaged or repaired wiring.
- Check the Connector Plug: Look inside the plastic connector. The pins should be straight and free of any green or white corrosion. The plastic locking tab should be intact and not broken off.
- Examine the Sensor Head: The sensor head itself (the part that mounts to the knuckle) should be free of cracks, melting, or signs of heavy impact.
- Mileage vs. Condition: While these are electronic parts, the wiring is subject to heat and flexing. A sensor from a lower-mileage vehicle is generally preferable, but a visually perfect sensor from a higher-mileage car is still a good option if the wiring and connector are in excellent shape.
Part Number and Compatibility Guide
The 2015-2019 Sonata uses different sensors for the front-left, front-right, and rear positions.
Pro Tip: While some databases state these sensors are for gasoline models only, official Hyundai parts catalogs show the front sensors also fit Sonata Hybrid models. Because of potential variations, it is always best to confirm the exact part number with your vehicle's VIN before ordering.
| Position | OEM Part Numbers |
|---|---|
| Front Left (Driver Side) | 59810-C1000, 59810-C2000 |
| Front Right (Passenger Side) | 59830-C1000, 59830-C2000 |
| Rear (Left or Right) | 58980-C1100 |
Replacement Overview & Difficulty
- Difficulty Rating: 2/5 (Front), 3/5 (Rear)
- Tools Needed: Jack and jack stands, socket set (10mm, 12mm, 14mm, 17mm), wheel lug wrench, flathead screwdriver.
Front Sensor Replacement (Easier)
The front sensor is a straightforward DIY job. After safely lifting the car and removing the wheel, you'll find the sensor bolted to the steering knuckle with a single 10mm bolt. The wire is secured by a bracket (often a 12mm bolt) and a few clips inside the fender liner before it plugs into the main harness. Simply unbolt the old sensor, disconnect it, and install the new one in reverse order.
🎬 See this front wheel speed sensor replacement guideRear Sensor Replacement (More Involved)
The rear sensor can be more complex. It is mounted near the rear wheel hub. On this generation of Sonata, the magnetic tone ring the sensor reads is integrated into the wheel bearing/hub assembly. To access the sensor and its mounting bolts, you will likely need to remove the brake caliper and rotor. If a new sensor doesn't fix the problem, the issue may be a damaged or rusted tone ring, which requires replacing the entire rear wheel hub assembly.
🎬 Watch: Rear ABS wheel speed sensor replacement walkthroughCost Comparison
Prices can vary, but this gives a general idea of what to expect.
| Part Source | Estimated Price (Per Sensor) |
|---|---|
| New OEM (Dealer) | $260 - $375 |
| New Aftermarket | $20 - $225 |
| Used OEM | $20 - $50 |
| Shop Labor Cost | $80 - $150 |
Frequently Asked Questions (FAQ)
Do I need to replace all four ABS sensors at once?
No. You only need to replace the specific sensor that has failed. A proper diagnostic scan will tell you which wheel is reporting a fault.
Will the ABS light turn off by itself after I replace the sensor?
Usually, yes. After you replace the faulty sensor, the ABS light should turn off on its own after driving a short distance. If it remains on, you may need to use a scanner to clear the stored fault codes, or there may be another issue in the system.
Is the front sensor the same as the rear sensor?
No. The front and rear sensors have different part numbers, shapes, and mounting brackets. They are not interchangeable. The front sensors are also specific to the left and right sides.
Can a bad ABS sensor cause my car to not start?
No, a faulty ABS wheel speed sensor will not prevent your car from starting or running.
Helpful Videos
Technical Specifications
OEM Part Numbers: 59810-C2000 59810-C1000 59830-C1000 59830-C2000 58980-C1100
This is a magnetic hall-effect sensor with an integrated wiring harness and a 2-pin connector.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Hyundai Sonata:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Symptoms of a Failing ABS Wheel Speed Sensor
- Common Diagnostic Trouble Codes (DTCs)
- Known Issues, TSBs, and Recalls
- Recall 134: ABS Warning Light Malfunction
- Buying a Used ABS Wheel Speed Sensor: What to Check
- Part Number and Compatibility Guide
- Replacement Overview & Difficulty
- Front Sensor Replacement (Easier)
- Rear Sensor Replacement (More Involved)
- Cost Comparison
- Frequently Asked Questions (FAQ)
- 🎟️ Get 5% Off