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 C1861-9A
DTC C1861-9A : Vehicle Spin Detected
NOTE:
- Before you troubleshoot, review the General Troubleshooting Information .
- When a vehicle spin is detected, DTC C1861-9A is set for the purpose of protecting the real time AWD system. When this condition occurs, the system will temporarily stop the real time AWD function. This DTC may also set under these conditions.
-
- -
When spinning the rear wheels while stuck in sand, mud, snow, etc
- -
When the VSA system is OFF
- -
- If other DTCs are stored at the same time as DTC C1860-98 and/or DTC C1861-9A, troubleshoot other DTCs first, then recheck for DTC C1860-98 and/or DTC C1861-9A.
| DTC Description | DTC | Freeze Frame |
|---|---|---|
| C1861-9A Vehicle Spin Detected |
DTC (Real Time AWD)
- DTC check
-1. Turn the vehicle to the ON mode.
-2. Check for DTCs with the HDS.
DTC Description DTC Freeze Frame Is DTC C1860-98, C1861-9A, or other DTCs indicated?
DTC C1860-98 or C1861-9A is indicated
Go to step 2.
Other DTC is indicated
Go to the indicated DTC's troubleshooting.
- Tire size check
-1. Check the tire size of the four wheels.
Are all tire sizes same?
YES
The tire sizes are OK. Go to step 3.
NO
- Brake drag check
-1. Check for brakes drag.
Are the brakes OK?
YES
Intermittent failure, the system is OK at this time. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot.
NO
Repair the front/rear hydraulic brake system or the parking brake system .
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.