Hyundai Elantra ABS Speed Sensor 59810-2L300 59830-2L300 91920-0Q000 91921-0Q000

ABS Wheel Speed Sensor 59810-2L300/59830-2L300/91920-0Q000/91921-0Q000 For Hyundai Elantra

59810-2L300 is the front left (driver side) sensor, while 59830-2L300 serves as the front right (passenger side) sensor. These two front sensors are often sold as a pair for complete front axle replacement. The 91920-0Q000 and 91921-0Q000 are rear sensors, typically installed on the left and right rear wheels respectively.

These part numbers cross-reference with several alternative OE numbers. Understanding these references ensures correct part identification when sourcing replacements:

Important Notes on Cross-References:

• 59810-2L300 and 598102H300 are functionally identical, with the "2L300" and "2H300" suffixes representing different production batches or minor revisions.

• 59830-2L300 and 598302H300 follow the same interchangeability pattern.

• The "2L300" series and "2H300" series are direct substitutes.

• 91920-0Q000 and 91921-0Q000 are typically sold as a matched rear axle set.

These ABS wheel speed sensors are specifically engineered for the following vehicle applications:

• GLS

• Limited

• SE

• Blue

• Touring GLS / Touring SE

Based on cross-reference data, these sensors may also be compatible with:

• Hyundai i30 (front axle applications)

• Hyundai Elantra Hatchback

Note: Always verify fitment for your specific vehicle by confirming the original equipment (OE) part number on your existing sensor before purchasing.

A failing ABS wheel speed sensor can manifest through several noticeable symptoms. Early recognition of these signs can prevent more serious braking system issues:

The most common and immediate indicator of a failing ABS sensor is the illumination of the ABS warning light on the vehicle dashboard. When the sensor fails to send a proper signal, the ABS control module detects the anomaly and triggers the warning light.

A faulty sensor may cause the ABS system to function improperly, resulting in longer stopping distances than normal. Without accurate wheel speed data, the system cannot optimally modulate brake pressure during emergency stops.

Drivers may experience reduced vehicle stability during braking, particularly on wet, icy, or slippery road surfaces. The ABS system relies on sensor data to prevent wheel lockup; without it, the vehicle becomes more difficult to control under hard braking.

Since the ABS sensors also provide data for the traction control and electronic stability control systems, a failing sensor can cause traction control warning lights or reduced traction system performance.

Common fault codes associated with ABS sensor failure include:

• C1211 – No wheel speed signals within 10ms–20ms at speeds above 26.8 mph

• C1205 – No wheel speed signals within 10ms–20ms at speeds above 43.2 km/h, or sensor deviation exceeding threshold

• DTC 29 – Abnormal ABS sensor signal (noise, irregular signal, etc.)

When diagnosing with an OBD scanner, the faulty sensor will typically show zero or erratic readings compared to functioning sensors on other wheels.

In some cases, a failing sensor may cause the ABS system to activate prematurely at very low speeds (e.g., below 2.75 km/h) when it should not be engaged.

These sensors are position-specific:

• 59810-2L300 = Front Left (Driver Side)

• 59830-2L300 = Front Right (Passenger Side)

• 91920-0Q000 / 91921-0Q000 = Rear positions

Installing a sensor on the incorrect wheel will not resolve the issue and may trigger additional fault codes.

Genuine OEM parts offer:

• Direct fit – exact match to the original component

• OEM-grade materials – manufactured to original equipment specifications

• Proven reliability – tested to meet vehicle manufacturer standards

Aftermarket alternatives may offer cost savings but vary significantly in quality. User reviews indicate that budget options can successfully resolve ABS warning lights, though long-term reliability may differ.

Before purchasing a replacement sensor:

• Use an OBD-II scanner with ABS capability to read fault codes

• The fault code will typically identify the specific wheel with the sensor issue

• Compare live data readings from all four sensors – the faulty one will show zero or erratic values

Before replacing the sensor itself:

• Check for damaged wiring or corroded connectors

• Inspect the tone wheel / sensor rotor for damage or missing teeth

• Ensure proper sensor gap and installation alignment

• These sensors are designed for direct fit replacement

• Installation is typically straightforward, though accessing the sensor may require wheel removal

• Ensure the sensor is properly seated and the connector is securely fastened

• Improper installation can cause immediate fault codes

• OEM dealer prices can be significantly higher than aftermarket alternatives

• Many users report successful resolution of ABS issues with reasonably priced replacements

• Consider the vehicle's age and value when deciding between OEM and aftermarket options

When replacing one front sensor, consider replacing both front sensors (59810-2L300 and 59830-2L300) simultaneously, as they experience similar wear conditions. The same applies to rear sensors (91920-0Q000 and 91921-0Q000).

• Verify the warranty coverage offered by the seller

• Ensure the supplier offers a reasonable return policy in case of incorrect fitment

• Genuine OEM parts typically include a minimum 12-month warranty