Gyroscope Error
Your vehicle's gyroscope sensor, which helps detect vehicle motion and stability, is sending an invalid or out-of-range signal to the stability control system. Think of it like a compass that's giving wildly incorrect direction readings—the system knows something is wrong but can't trust the data.
The ECU monitors gyroscope output signals that measure vehicle yaw rate (rotational movement). The sensor should produce voltage or CAN data within expected ranges during normal driving. If the gyroscope signal is missing, inverted, noisy, or exceeds calibrated thresholds, the ECU triggers a fault.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Yaw Rate Signal Voltage | 0.5–4.5V (sensor-dependent) | Out-of-range, <0.4V or >4.6V |
| Signal Consistency/Rate of Change | Smooth transitions within ±50°/sec per sample | Erratic spikes or frozen readings |
Code B2206 is a low-severity fault. Your vehicle is generally safe to drive to a workshop for diagnosis. However, do not ignore it indefinitely — low-severity codes often indicate developing problems that become expensive if neglected. Book a diagnostic appointment within 2–4 weeks. If you notice any additional symptoms (rough running, power loss, unusual smells), treat it as higher priority.
Once the fault is repaired, B2206 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.