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.
Check Vehicle Speed Sensor 1
- 9C1: CHECK VEHICLE SPEED SENSOR 1.
- Lift-up or raise the vehicle and support with safety stand.CAUTION: On AWD models, raise all wheels off ground.
- Read data of vehicle speed #1 using Subaru Select Monitor.
- Compare speedometer with Subaru Select Monitor indications.
- Vehicle speed is indicated in "MPH" or "km/h".
NOTE: The speed difference between front and rear wheels may light the ABS warning light, but this indicates no malfunction. When AT control diagnosis is finished, perform the ABS memory clearance procedure of on-board diagnostics system. See CLEARING MEMORY-ABS .CHECK: Does the speedometer indication increase as the Subaru Select Monitor data increases?
- YES: Go to step vehicle speed sensor 2, see CHECK VEHICLE SPEED SENSOR 2 .
- NO: Check vehicle speed sensor 1 circuit, see DTC 93: VEHICLE SPEED SENSOR 1 (REAR) .
- Lift-up or raise the vehicle and support with safety stand.
Use the Manual With the Right Hardware
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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.
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