Lost Communication With Yaw Rate Sensor Module
What does U0123 mean?
The U0123 code means the vehicle's onboard diagnostic system has detected: Lost Communication With Yaw Rate Sensor Module. This is a moderate severity code.
Common Symptoms
- Stability control warning light on
- Traction control warning light on
- ESC/VSC system disabled
- ABS light may also be illuminated
- Vehicle may feel less stable in turns
Probable Causes (Ranked by Likelihood)
- Failed yaw rate sensor Very High
- Damaged wiring to yaw rate sensor module High
- Corroded yaw rate sensor connector Moderate
- Yaw rate sensor mounting issue or loose bolts Moderate
- Water intrusion at yaw rate sensor location Low
Step-by-Step Diagnostic Procedure
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Scan for DTCs in stability control, ABS, and body modules
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Locate the yaw rate sensor -- typically under the center console or beneath a seat
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Check the yaw rate sensor connector for corrosion or damage
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Verify power supply and ground at the sensor connector
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Check for water intrusion at the sensor mounting location
Frequently Asked Questions
Can I drive with code U0123?
You can drive short distances, but your stability control system is disabled. The vehicle will not have electronic stability assistance in emergency maneuvers or slippery conditions.
What causes U0123?
A failed yaw rate sensor is the most common cause. These sensors can fail due to age, water intrusion, or loose mounting. Wiring damage is also a frequent cause.
Where is the yaw rate sensor located?
The yaw rate sensor is typically mounted under the center console, beneath a front seat, or near the center of the vehicle on the floor pan. Its central location helps it accurately detect vehicle rotation.