Yaw Rate Sensor Circuit Open
The yaw rate sensor, which detects how much your car is rotating left or right, has a broken electrical connection. It's like a gyroscope that tells your stability control system which way the car is spinning.
The yaw rate sensor sends a voltage signal proportional to the vehicle's rotational movement around the vertical axis. The ECM monitors this signal continuously and compares it to expected values based on steering angle and vehicle speed. An open circuit means zero or no signal is being received.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Yaw Rate Sensor Voltage | 0.5–4.5 volts (varies by manufacturer) | No signal or voltage out of valid range |
| Signal Continuity | Continuous signal present | Open circuit detected (infinite resistance) |
Code C1952 is classified as a serious fault. If your check engine light is flashing — not just steady — pull over safely and do not continue driving. A flashing CEL indicates an active misfire or critical failure that can cause catalytic converter damage within minutes or permanent engine harm within miles. Contact a certified mechanic immediately. Do not attempt roadside repairs on high-severity codes unless you are trained to do so.
Once the fault is repaired, C1952 can be cleared using any OBD-II scanner. Connect the scanner, navigate to "Clear Codes" or "Erase DTCs," and confirm. The check engine light turns off immediately.
The code will return if the root cause was not actually fixed. The ECM re-detects the fault within 1–3 drive cycles and sets the code again.