C0035 on Subaru: How to Diagnose & Fix
Left Front Wheel Speed Sensor Circuit
1 Subaru model · 1 documented issue · $300-$800 repair
C0035 on Subaru by model: symptoms, diagnosis and fix
Crosstreks are prone to premature wheel bearing failure, particularly on the rear wheels, often occurring between 50,000-90,000 miles. The AWD system places additional stress on wheel bearings. Contamination from road salt and water intrusion accelerates bearing wear. Failed wheel bearings create a humming or growling noise that changes with vehicle speed and may be louder during turns. If ignored, a severely worn bearing can cause wheel wobble and ABS/traction control malfunctions.
Common Symptoms
- Humming or growling noise that increases with vehicle speed
- Noise changes pitch or volume when turning left or right
- Vibration felt through steering wheel or floor
- ABS or traction control warning light
- Play or looseness felt when rocking the wheel by hand
How to Fix
Replace the failed wheel bearing hub assembly. Subaru uses pressed-in bearings that require a hydraulic press - the entire knuckle must be removed. Rear bearings are more common failures. Use quality replacements: NSK 62BWKH19 (OEM supplier), SKF BR930737, or Timken HA590361. Replace in pairs (both rears or both fronts) for even wear. Torque axle nut to 162 ft-lbs per Subaru spec.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Genuine Subaru 28473FL040 Rear Hub Unit Complete (superseded by 28473FL041)
bolt-in rear hub-and-bearing assembly for the diagnosed rear branch only Fitment/availability: Rear position only for the retailer-cataloged 2017-2021 Crosstrek Base, Limited, Premium and Sport 2.0L/2.5L applications; exclude hybrid and …
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C0035 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does C0035 mean on a Subaru?
C0035 stands for "Left Front Wheel Speed Sensor Circuit." This chassis code indicates a fault in the left front wheel speed sensor circuit. Each wheel has a speed sensor that tells the ABS, traction control, and stability control systems how fast that wheel is turning; the control module sets this code when the signal from the left front sensor is missing, erratic, or out of range. Without a valid reading, the computer can't safely operate anti-lock braking and related systems, so it usually disables ABS and traction/stability control and lights the corresponding dashboard warnings (normal braking still works). It generally points to the sensor itself, its wiring, or the toothed reluctor ring it reads. On Subaru it is documented across 1 model: Crosstrek.
What are the most common causes of C0035?
The most common causes of C0035 are: Faulty left front wheel speed sensor, Damaged sensor wiring or connector (road debris, corrosion), Metal debris or rust on the sensor tip or air gap, Damaged or cracked tone/reluctor ring, Loose or improperly seated sensor, Corroded or loose wheel bearing with integrated sensor, Open or short in the sensor circuit, Faulty ABS control module (less common). The specific cause varies by vehicle.
How much does it cost to fix C0035 on a Subaru?
Published repair estimates on Subaru range from $300 to $800 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for C0035 on a different make?
View C0035 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.