C0063

Code

Generic C — Chassis

Yaw Rate Sensor

Brand: Generic

Type: C — Chassis

Views: UK: 27 EN: 118 RU: 75

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Read stored codes and freeze-frame data with an appropriate scan tool (ABS/ESP module)
Check battery voltage and charging system (low supply can cause sensor errors)
Visually inspect sensor mounting and wiring harness for damage, chafing, corrosion, or water intrusion
Check connector pins for corrosion, bent pins or push-pulls; reseat connector
Verify fuse(s) supplying the sensor and module are intact
Backprobe sensor supply, ground and signal with a multimeter/oscilloscope

Supply: typically 5 V reference (or battery/ignition supply depending on design) and ground — verify present at sensor connector
Output: MEMS yaw sensors often provide a centered DC voltage at 0°/s (commonly ~Vref/2) or a digital/CAN data stream — expected value should be stable at rest
Response: output should change smoothly and proportionally with angular rotation (degrees/sec) without dropouts or noise
Impedance/continuity: wiring harness should show continuity to module ground and reference supply
Communication: if sensor uses CAN/SPI/I2C, verify bus integrity and absence of bus errors

Retrieve all DTCs and freeze-frame; note whether the fault is historic or current and any time stamps.
Inspect sensor and harness physically for damage, corrosion, water, or loose mounting.
Verify vehicle battery and charging voltage to rule out supply-related faults.
Check sensor power and ground at the connector with key ON; compare to expected reference voltages.
Monitor yaw rate signal at rest and while rotating the vehicle or turning the steering (use oscilloscope or scan tool live data). At rest the signal should be steady; during rotation it should vary smoothly.
Wiggle harness and connector while observing live data to detect intermittent wiring faults.
If signal absent or implausible and supply/ground OK, swap with known-good sensor (if available) or temporarily bridge sensor harness to confirm fault follows the sensor.
Check for module software updates or required yaw sensor calibration/initialization procedure after replacement; perform any relearn procedures.
Replace sensor only after confirming wiring/module are OK; clear codes and test drive to verify fault does not return.
If fault persists after sensor replacement and calibration, inspect/replace ABS/ESC control module or investigate CAN/bus faults.