C0045 on Nissan
Left Rear Wheel Speed Sensor Circuit
C0045 on Nissan vehicles indicates left rear wheel speed sensor circuit. Au7o has documented this code across 1 Nissan model — most commonly on 370Z. This is a brake/ABS-system code. Each wheel has a speed sensor that tells the anti-lock brake (ABS), traction control, and stability systems how fast that wheel is turning. C0045 means the ABS module has detected an electrical problem in the circuit for the left rear wheel speed sensor — such as an open, short, or signal that's missing or out of range. As a result you'll typically see the ABS and traction/stability warning lights, and those safety features may be temporarily disabled even though your normal brakes still work. Typical repair costs on Nissan range from $400 to $1,200, depending on the specific model and root cause.
Common Causes of C0045
- •Failed left rear wheel speed sensor
- •Damaged, corroded or disconnected sensor wiring/connector
- •Damaged or contaminated tone/reluctor ring (rust, debris, missing teeth)
- •Excessive air gap between sensor and tone ring
- •Wheel bearing wear affecting the sensor (on bearing-integrated sensors)
- •Water intrusion or corrosion in the connector
- •Faulty ABS control module (less common)
C0045 on Nissan by Model
Nissan 370Z(1 issue)
- Brake Actuator Relay Failure2009-2014
Early 370Z models can experience brake actuator relay failures, which affect the ABS and vehicle stability control systems. This can cause warning lights on the dash and may affect brake performance in emergency situations.
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View C0045 across all makes →Frequently Asked Questions
What does C0045 mean on Nissan?▼
C0045 stands for "Left Rear Wheel Speed Sensor Circuit." This is a brake/ABS-system code. Each wheel has a speed sensor that tells the anti-lock brake (ABS), traction control, and stability systems how fast that wheel is turning. C0045 means the ABS module has detected an electrical problem in the circuit for the left rear wheel speed sensor — such as an open, short, or signal that's missing or out of range. As a result you'll typically see the ABS and traction/stability warning lights, and those safety features may be temporarily disabled even though your normal brakes still work. On Nissan specifically, this code is documented across 1 model.
What causes C0045 on Nissan vehicles?▼
Common causes on Nissan: Failed left rear wheel speed sensor, Damaged, corroded or disconnected sensor wiring/connector, Damaged or contaminated tone/reluctor ring (rust, debris, missing teeth), Excessive air gap between sensor and tone ring, Wheel bearing wear affecting the sensor (on bearing-integrated sensors). Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix C0045 on a Nissan?▼
Repair costs on Nissan range from $400 to $1,200, depending on the specific model and root cause.
Which Nissan models have C0045 documented?▼
Au7o has documented C0045 on 1 Nissan model: 370Z.