C2150

Code

Generic C — Chassis

Yaw Rate Sensor Circuit Malfunction

Brand: Generic

Type: C — Chassis

Views: UK: 13 EN: 12 RU: 13

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Page language: EN

Use a scan tool to read and record C2150 plus any additional ABS/ESC codes and freeze frame data
Perform a visual inspection of the yaw sensor, connector, and wiring harness for damage, corrosion, chafing, or disconnection
Check that the sensor is securely mounted and not misaligned or loose
Verify power and ground at the sensor connector with ignition ON using a digital multimeter
Check for proper reference voltage/sensor output per manufacturer specification (see signal_params)
Monitor live data from the yaw sensor with scan tool while slowly turning steering/wheels or during a low-speed drive to see signal change

Two common types: analog ratiometric output or digital (CAN/SPI) output depending on vehicle
Typical analog behavior: center (zero yaw) voltage around ~2.5 V (reference) with voltage deviation proportional to yaw rate; expected range commonly within 0–5 V (manufacturer-specific)
Typical sensitivity: sensor voltage changes proportionally with angular rate (units expressed as V/deg/s or mV/deg/s) — refer to OEM spec for exact sensitivity
Digital sensors transmit angular rate as degrees/second over CAN or SPI; check message frequency and checksum validity
Expected behavior: stable zero-center output at rest, smooth proportional change when vehicle rotates; no erratic spikes or open-circuit indications

Connect scan tool, record codes and live data, note freeze frame conditions
Inspect sensor, wiring, and connectors for physical damage, corrosion, or loose mounting
With ignition ON, verify sensor supply voltage (reference) and ground at the sensor connector per OEM spec (typically a reference voltage ~2.5 V for analog sensors or 5 V/3.3 V supply for digital)
Measure sensor output at rest — analog should be near mid-scale (e.g., ~2.5 V) and should move smoothly when vehicle is yawed or when steering is turned; use oscilloscope if available to check waveform quality
Perform continuity and resistance checks between sensor connector and ABS/ESC module to rule out wiring opens/shorts; inspect for high resistance grounds
If communication-type sensor, verify CAN bus is healthy (check other CAN devices, bus voltage, and termination) and that messages from the sensor are present and valid
Wiggle the harness and connectors while monitoring for code set or data dropouts to find intermittent faults
If wiring and power/ground are good and sensor output is out of range or erratic, replace the yaw rate sensor
After repair or replacement, clear codes and perform required calibration/initialization of the yaw sensor per OEM procedure (many systems require calibration or a drive routine)
Re-scan and test-drive to confirm the fault does not return and that ESC/ABS systems operate normally