C0040 on Nissan
Right Front Wheel Speed Sensor Circuit
C0040 on Nissan vehicles indicates right front wheel speed sensor circuit. Au7o has documented this code across 1 Nissan model — most commonly on 370Z. This is a brake/ABS-system code. The right front wheel speed sensor measures how fast that wheel is rotating and feeds that data to the anti-lock brake, traction control, and stability control systems. C0040 means the ABS module found an electrical problem in the right front wheel speed sensor circuit — for example an open circuit, a short, or a signal that is missing or out of range. You'll normally see the ABS and traction/stability lights come on, and those systems may shut off temporarily while your regular brakes keep working. Typical repair costs on Nissan range from $400 to $1,200, depending on the specific model and root cause.
Common Causes of C0040
- •Failed right front wheel speed sensor
- •Damaged, corroded or unplugged sensor wiring/connector
- •Damaged or rust-clogged tone/reluctor ring
- •Excessive air gap between sensor and tone ring
- •Wheel bearing wear affecting an integrated sensor
- •Water intrusion or corrosion at the connector
- •Faulty ABS control module (less common)
C0040 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 C0040 across all makes →Frequently Asked Questions
What does C0040 mean on Nissan?▼
C0040 stands for "Right Front Wheel Speed Sensor Circuit." This is a brake/ABS-system code. The right front wheel speed sensor measures how fast that wheel is rotating and feeds that data to the anti-lock brake, traction control, and stability control systems. C0040 means the ABS module found an electrical problem in the right front wheel speed sensor circuit — for example an open circuit, a short, or a signal that is missing or out of range. You'll normally see the ABS and traction/stability lights come on, and those systems may shut off temporarily while your regular brakes keep working. On Nissan specifically, this code is documented across 1 model.
What causes C0040 on Nissan vehicles?▼
Common causes on Nissan: Failed right front wheel speed sensor, Damaged, corroded or unplugged sensor wiring/connector, Damaged or rust-clogged tone/reluctor ring, Excessive air gap between sensor and tone ring, Wheel bearing wear affecting an integrated sensor. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix C0040 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 C0040 documented?▼
Au7o has documented C0040 on 1 Nissan model: 370Z.