Code
C2333
Generic
C — Chassis
Yaw Rate Sensor Circuit Range/Performance
Views:
UK: 1
EN: 3
RU: 2
AI status
Completed
Completed
100%
Causes
- Failed or degraded yaw rate (gyroscope) sensor
- Damaged or corroded sensor connector or pins
- Open, shorted or high-resistance wiring between sensor and control module
- Incorrect sensor mounting, orientation, or physical damage
- Poor sensor reference/supply voltage (battery, fused circuits)
- Interference or electrical noise on the signal or CAN/communication line
Symptoms
- ESC/ESP or Traction Control warning lamp illuminated
- Stability control functions reduced or disabled
- Diagnostic trouble code C2333 stored (may be accompanied by other chassis codes)
- Vehicle may feel less stable in cornering or under evasive maneuvers
- Possible ABS or brake system messages if integrated with stability control
What to check
- Read DTCs and freeze-frame data with a CAN-capable scan tool; note any related codes
- Visual inspection of yaw sensor, mounting bracket, and wiring harness for damage, corrosion, or looseness
- Check battery voltage and main fuses related to ABS/ESC circuits
- Verify sensor connector is fully seated and pins are clean and not bent
- Backprobe sensor connector and measure reference supply voltage, ground, and signal with key on
- Compare live yaw rate sensor output to vehicle speed and steering angle data while gently driving (with a helper or safe road test)
Signal parameters
- Typical supply/reference: 5 V or 3.3 V (vehicle dependent) at sensor power pin; verify against vehicle wiring diagram
- Typical signal idle voltage: around mid-supply (e.g., ~2.5 V on a 5 V system) when no yaw (0 deg/s)
- Signal varies above/below mid-reference proportional to yaw rate (degrees/sec); sensor full-scale ranges commonly ±100–±300 deg/s
- Look for a clean analog DC level or digital CAN/IC message; excessive noise, offset, or stuck value indicates a problem
- No open circuit or short to battery/ground — continuity and resistance should match service specs
Diagnostic algorithm
- Confirm code presence and note any additional chassis or ABS codes. Record freeze-frame and live-data values.
- Clear codes, then recheck. If the code returns immediately or after short drive, continue diagnostics.
- Visual inspection: check sensor mounting, connector condition, and wiring for chafing or damage.
- With ignition ON (engine off), backprobe connector: verify sensor supply voltage and ground reference match specs.
- Monitor sensor signal with scan tool or DMM/oscilloscope at rest — expect mid-reference voltage. Rotate vehicle slowly or perform small steering inputs and observe signal change proportional to yaw and consistent with steering angle/wheel speeds.
- Perform a wiggle test on harness/connectors while watching live data for intermittent changes. Check continuity and resistance to ground/power for shorts or opens.
- Compare yaw rate sensor output to steering angle and wheel speed sensors during a low-speed dynamic test. Large discrepancies indicate sensor or communication failure.
- If wiring, supply, and ground are good but signal abnormal, attempt sensor replacement or swap with a known-good sensor (if available) and retest.
- After replacement, perform required sensor calibration/relearn procedure per vehicle service instructions and clear codes.
- If problem persists after sensor replacement and calibration, inspect the ABS/ESC control module and CAN communication for faults, and check for software updates or module reprogramming.
Likely causes
- Broken or corroded connector at the yaw sensor
- Signal short to voltage or ground in harness
- Sensor internal failure (noisy or out-of-range output)
- Sensor misaligned or mechanically damaged after impact
- Lost sensor calibration after battery disconnect or module replacement
Fault status
Status
Yaw Rate Sensor Circuit Range/Performance — sensor output is outside expected range or inconsistent with other vehicle motion sensors. May disable stability control until fault is resolved.
Repair difficulty: Medium
Diagnostic time: 0.5-2.5 hours
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