Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC 25-120
DTC 25-120 : Yaw Rate Sensor (Inside of Modulator-Control Unit) Stuck
NOTE:
- Before you troubleshoot, review the general troubleshooting information .
- The yaw rate-acceleration sensor is built into the VSA modulator-control unit.
- Before troubleshooting, check the VSA modulator-control unit for proper mounting. Improper mounting of the VSA modulator-control unit may set this code.
| DTC Description | DTC | Freeze Frame |
|---|---|---|
| 25-120 Yaw Rate Sensor (Inside of Modulator-Control Unit) Stuck |
DTCs (VSA)
- Problem verification
-1. Turn the vehicle to the ON mode.
-2. Clear the DTC with the HDS.
-3. Turn the vehicle to the OFF (LOCK) mode.
-4. Test-drive the vehicle at 6 mph (10 km/h) or more.
NOTE: Drive the vehicle on the road, not on a lift.
-5. Check for DTCs with the HDS.
DTC Description DTC Freeze Frame 25-120 Yaw Rate Sensor (Inside of Modulator-Control Unit) Stuck Is DTC 25-120 indicated?
YES
The failure is duplicated. Go to step 2.
NO
Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting .
- Yaw rate sensor performance check
-1. Turn the vehicle to the OFF (LOCK) mode.
-2. Test-drive the vehicle.
NOTE: Drive the vehicle on the road, not on a lift.
-3. Check the parameter(s) below with the HDS while driving around corners.
NOTE: Use the HDS with on-board snapshot.
Signal Current conditions Values Unit YAW RATE SENSOR Does the indicated value change?
YES
The system is OK at this time.
NO
Go to step 3.
- VSA modulator-control unit check (update)
-1. Update the VSA modulator-control unit if it does not have the latest software .
-2. Turn the vehicle to the OFF (LOCK) mode.
-3. Test-drive the vehicle at 6 mph (10 km/h) or more.
NOTE: Drive the vehicle on the road, not on a lift.
-4. Check for DTCs with the HDS.
DTC Description DTC Freeze Frame Is DTC 25-120 indicated?
YES
Check for loose terminals in the VSA modulator-control unit 21P connector. If the VSA modulator-control unit was updated and the symptom/indication is still present, replace the VSA modulator-control unit .
NO
Troubleshooting is complete. If any other DTCs are indicated, go to the indicated DTCs troubleshooting.
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.