ABS Wheel Speed Sensor 47901‑9CA6A: Specifications, Features, and Compatible Vehicle Applications
The ABS Wheel Speed Sensor 47901‑9CA6A is a critical safety and braking component designed to monitor wheel rotation and transmit accurate wheel speed signals to the vehicle’s anti‑lock braking system (ABS). This sensor plays a key role in helping the ABS control unit detect wheel slip, improve braking stability, and support traction and stability systems during emergency braking or low‑traction driving conditions. OEM and aftermarket fitment references identify 47901‑9CA6A as a rear left / left‑rear ABS wheel speed sensor for selected Nissan pickup models—notably the Nissan Frontier.
What Does ABS Wheel Speed Sensor 47901‑9CA6A Do?
The primary purpose of the 47901‑9CA6A wheel speed sensor is to accurately measure the rotational speed of the vehicle’s wheel and relay that data in real time to the ABS control module. The ABS control unit continuously compares speed signals from all four wheel sensors during braking and driving. If it detects an imbalance (for example, one wheel slowing down faster than the others), the ABS system modulates brake pressure to help prevent wheel lock‑up and maintain steering control.
In addition to supporting the ABS, the wheel speed sensor also plays an important role in: Traction Control System (TCS) Electronic Stability Control (ESC) Vehicle stability functions Safer braking on slippery or uneven roads
Below are the key product specifications and features typically listed for the 47901‑9CA6A ABS wheel speed sensor:
Part Number: 47901‑9CA6A Product Type: ABS Wheel Speed Sensor Installation Position: Rear Left / Rear LH / Driver Side Rear OEM / OE Number: 47901‑9CA6A Other Common Names: Rear Speed Sensor, ABS Sensor, Sensor Assembly – Rear Left Fitment Type: Direct Replacement / OE‑style Fit Condition: New Connector Type: Pin‑type Plug / OEM‑style Electrical Connector Housing Material: Durable plastic and metal for harsh‑environment resistance Compatible Brands and Vehicle Models: Nissan Frontier 2005–2019
Replacing a faulty wheel speed sensor with the 47901‑9CA6A offers several benefits: ✅ Improved ABS braking response When the sensor accurately relays wheel speed, the ABS system can better prevent wheel lock‑up. ✅ Precise traction control support Reliable wheel speed data helps the traction system reduce wheel spin during acceleration. ✅ Enhanced vehicle stability Accurate feedback improves stability control function during sudden steering or slippery surfaces. ✅ Elimination of warning lights A properly functioning sensor helps resolve ABS or traction control warning indicators caused by sensor failure.
If the ABS wheel speed sensor becomes worn, damaged, or stops sending a stable signal, the vehicle may exhibit one or more of the following symptoms: ABS warning light remains illuminated Traction control / ESC warning light appears Unusual ABS activation at low speeds Stored wheel speed sensor fault codes Intermittent or inaccurate speed readings Reduced braking stability on slippery roads Damaged or corroded sensor wiring or connector
