Yaw Rate Sensor Circuit Failure
The C1279 code indicates a fault in the yaw rate sensor circuit, which is part of the electronic stability control (ESC) system. This sensor measures the vehicle's rotation rate around its vertical axis, detecting if the car is skidding or spinning unexpectedly. The ABS or stability control module has detected a missing, out-of-range, or erroneous signal from the sensor, preventing proper operation of driver assistance systems.
1. Commonly Affected Makes
2. Most Common Causes
- Faulty or worn yaw rate sensor
- Damaged, corroded, or loose sensor wiring or connector
- Short circuit or open circuit in the sensor harness
- Faulty ABS or ESC control module
- Incorrect sensor calibration after previous repairs
- Impact damage or sensor misalignment from a collision
3. Symptoms You Will Notice
- Illuminated ABS, ESC, or traction control warning lights
- Loss of stability control, traction control, or hill-hold assist
4. Step-by-Step Diagnosis
Scan for additional codes and check freeze frame data
Inspect the yaw rate sensor wiring and connector for damage, corrosion, or loose connections
Test sensor power, ground, and signal circuits with a multimeter
Check sensor mounting and alignment; replace if damaged
If wiring and sensor are okay, suspect a faulty ABS/ESC module
5. Frequently Asked Questions
Is it safe to drive?▼
No, it is not safe. The stability control system is disabled, increasing the risk of loss of control during emergency maneuvers or slippery conditions. Have the vehicle diagnosed and repaired promptly.
How much does it cost to fix?▼
Repair costs typically range from $200 to $800, depending on the cause. A sensor replacement costs $150–$400 for parts and labor, while module replacement can exceed $1,000.