AU
C006308

The yaw rate sensor (also known as the yaw angular velocity sensor) is the core inertial measurement unit of the ESP electronic stability system — Atto 3

Braking System

The yaw rate sensor (also known as the yaw angular velocity sensor) is the core inertial measurement unit of the ESP electronic stability system.

It monitors the vehicle's rotational angular velocity around the vertical axis (Z-axis) in real time.

DTC C006308 indicates the ABS/ESP control unit detects the sensor's analog or digital output signal continuously exceeds the valid threshold range (typically 0-5V or an abnormal CAN signal), or experiences an abnormal update frequency or checksum error.

This fault prevents the ESP from accurately determining the deviation between the vehicle's actual attitude and the driver's steering intent, causing the system to exit the stability control function and trigger a multi-system degraded protection mode.

In extreme cases, the vehicle loses electronic assistance during emergency obstacle avoidance or sideslipping on wet or slippery roads, posing a severe safety hazard.

4
Cases Logged
5
Causes
Likely Causes — Atto 3
  • 1Damaged yaw rate sensor chip integrated into the ESP hydraulic modulator assembly, or a dry solder joint (most common; many BYD models integrate the sensor into the ESP assembly instead of a separate external unit)
  • 2Poor contact or loose connection in the sensor power supply circuit (12V IGN) or ground wire (GND), causing operating voltage fluctuations or momentary power loss.
  • 3Sensor signal wire (LIN/CAN or analog signal wire) short circuit to power or ground, open circuit, or water ingress and oxidation in the connector causing signal crosstalk.
  • 4Loose sensor mounting base or aged, detached rubber vibration-damping pad causes the measurement reference to shift and the output signal to drift beyond the ECU fault tolerance range.
  • 5Physical damage to the sensor's internal MEMS micromechanical structure caused by an underbody impact, bottoming out, or severe jolting.
What To Do
  • 1
    Use the VDS2000/3000 diagnostic tool to read all fault codes, record the freeze frame data, and confirm if C006308 is a current fault and if related codes such as C006302/C006382 are present.
  • 2
    Check the relevant warning lights on the instrument cluster. With the vehicle stationary, check the data stream to verify the yaw rate value is approximately 0°/s (within ±5°/s). Confirm the fault if the value is fixed at 0 or 126, or is out of range.
  • 3
    Raise the vehicle. Inspect the exterior of the ESP assembly (located in the engine compartment or under the cabin center tunnel) and the wiring harness connector (usually a large 25-47 pin plug) for water ingress, corrosion, or recessed pins.
  • 4
    Disconnect the negative battery terminal. Measure the voltage and resistance at the yaw rate sensor power supply pins (usually IGN+ and GND) in the ESP assembly connector. Standard values: Power supply 12V±0.5V, ground resistance <1Ω.
  • 5
    If the circuit is normal, attempt sensor zero-point calibration (supported on some models): keep the vehicle stationary on a level surface and use the diagnostic tool to perform the "Yaw Rate Sensor Calibration" function.
  • 6
    If calibration fails or the fault persists, replace the ESP hydraulic modulator assembly with ECU (genuine BYD part). After replacement, perform bleeding, coding, and sensor calibration.
  • 7
    Road test verification: Drive in an S-pattern at 20-40 km/h and observe if the yaw rate value in the data stream changes in real time with steering input. Confirm the ESP function operates normally and the fault code does not return.
Real-World Cases
BYD DTC AI Analysis

BYD Song Plus DM-i: ESP and multiple warning lights on after water wading

✓
2021 Song PLUS DM-i. Owner reported that after driving through floodwater in heavy rain, the ABS, ESP and Automatic Emergency Braking warning lights illuminated. VDS scan showed current fault C006308. Found the ESP assembly near the right front side member. Disconnected the wiring harness connector and found water inside, with green corrosion on Pin 12 (sensor power supply) and Pin 28 (signal ground). Cleaned and dried the connector; fault cleared temporarily but returned after 2 days. Replaced the ESP wiring harness connector and sealed it against water. Fault resolved completely.
BYD DTC AI Analysis

Intermittent yaw rate sensor signal drift on E5 taxi

✓
A 2019 E5 taxi with 180,000 km occasionally displayed the ESC warning light, particularly after driving over speed bumps or rough roads. Scan tool showed intermittent fault code C006308. Live data revealed the yaw rate value occasionally jumped to 15-30°/s while the vehicle was stationary. Inspection of the ESP assembly mounting bracket found one mounting bolt loose and the rubber damper aged and cracked. Retightened the bolt and replaced the damper, then performed a continuous 50 km road test; live data remained stable and the fault resolved.
BYD DTC AI Analysis

C006308 fault code recurs after accident repairs

✓
A 2018 E5 sustained frontal collision damage. Repairs replaced the front bumper, left front fender and ESP assembly (salvage part). After the work, the instrument cluster showed a steady ESC fault. DTC C006308 was stored. The replacement ESP assembly part number had a different suffix from the factory original (missing the -02 version). The technical bulletin confirms this model requires a specific ESP version; sensor parameters require online programming and matching via VDS. Installing the correct ESP version and completing the online configuration cleared the fault.
BYD DTC AI Analysis

Sensor failed to initialize after long-term parking

✓
A 2019 E5 displayed an ESP warning light on startup after sitting stationary for 3 months. The scan tool retrieved DTC C006308; live data showed the yaw rate signal fixed at 0°/s. Power and ground circuits tested normal. The sensor calibration procedure returned "Calibration failed, sensor not ready". Diagnosis: internal ESP assembly sensor failure (long-term power-down caused the MEMS mechanism to seize). Replaced the ESP hydraulic modulator assembly, performed the calibration successfully, and cleared the fault.
Other Atto 3 Fault Codes
P0A0DBattery Energy Control Module Requested MIL IlluminationP0AA6Hybrid Battery Voltage System Isolation FaultP1A00Drive Motor "A" Performance — BYD proprietaryB1108For the BYD Song MAX (2017–2019), DTC B1108 indicates a short circuit in the PM2.5 air quality detection module (dust sensor) or its wiring harness. The sensor uses laser scattering to detect in-cabin and outside PM2.5 concentrations and transmits data to the HVAC ECU via the LIN bus or an analog signal. Short circuit conditions include: 1) Sensor power supply wire (+5V/+12V) shorted to ground 2) Signal wire shorted to power or ground 3) Short circuit in the sensor's internal photoelectric detection circuit This fault prevents the automatic climate control from switching between fresh air and recirculation based on air quality. The system enters fail-safe mode (typically forced recirculation). Severe short-circuit current can destroy the HVAC ECU sampling circuit. The system classifies this as a Level 3 severe fault and restricts vehicle operation to prevent electrical fires or controller damage. For other BYD models (such as the Qin EV, E5, and Song DM), B1108 indicates a driver-side sunload sensor fault, reflecting differences in DTC definitions across models.B110811This DTC indicates a short circuit in the air conditioning system PM2.5 air quality sensor (rapid detector). Specifically, abnormal continuity exists between the sensor power supply circuit or signal output circuit and body ground or battery positive. This causes the control module (ACU/air conditioning controller) to detect abnormal current or a voltage signal outside the valid range (typically 0V or supply voltage). The PM2.5 sensor monitors internal and external particulate concentrations, providing the data the automatic air conditioning system uses to switch between fresh air and recirculation modes. A short circuit disables the air quality monitoring function. This fault may force the air conditioning system into recirculation protection mode and trigger related thermal management system faults, as the air conditioning system acts as a key actuator in vehicle thermal management. In severe cases, the short circuit current can damage the internal sampling circuit of the air conditioning controller or overheat the wiring harness.
Data confidence: Official This information is for reference only. Always consult a qualified technician for diagnosis and repair. Do not attempt high-voltage system repairs yourself.