C2200 — Yaw rate sensor circuit malfunction

Causes

• Yaw rate sensor internal failure
• Damaged, corroded or disconnected wiring/connectors to the sensor
• Poor or lost sensor power/ground reference
• Short to battery or short to ground on the signal line
• Intermittent connection or broken shielded cable
• Faulty vehicle control module (ECU) or CAN bus communication issue

Symptoms

• ABS, ESC/DSC or stability control warning lamp illuminated
• Traction/stability control disabled or reduced functionality
• MIL or warning in instrument cluster about sensor fault
• Vehicle stability assist interventions at inappropriate times
• Loss of yaw rate data in live diagnostic stream or implausible values
• Possible drivability complaints during cornering or sudden maneuvers

What to check

• Retrieve and record stored DTCs and freeze frame data with a capable scan tool
• Inspect sensor and wiring harness for damage, chafing, corrosion and secure mounting
• Check connectors for bent pins, corrosion and proper locking
• Check for related codes (steering angle, wheel speed, lateral accel, CAN bus faults)
• Scan live data: yaw rate output at rest and during controlled rotation/road test
• Measure sensor supply voltage and ground at the connector

Signal parameters

• Sensor types: analog MEMS gyro or integrated IMU (analog voltage or CAN/serial output)
• Typical analog output: mid-rail quiescent ~2.5 V (centered) with change in voltage proportional to yaw rate (0–5 V systems common)
• Supply/reference: typically 5 V reference and ground; signal amplitude changes with angular velocity
• Signal behavior: near-zero yaw when stationary; smooth proportional changes with rotation; no erratic spikes or dropout
• Communication-type sensors: regular CAN or LIN messages containing yaw rate at typical message rates (tens to hundreds of Hz)

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