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C0035 — Right Front Wheel Speed Sensor Supply

Generic OBD-II · all makesChassis

C0035 indicates a malfunction in the supply voltage or circuit for the right front wheel speed sensor. This component measures wheel rotation speed to assist the anti-lock braking and stability control systems. A fault here typically disables these safety features while leaving conventional braking intact.

Symptoms

What causes it — most likely first

1. Failed wheel speed sensor

The internal coil or magnetic element within the right front sensor has failed.

2. Damaged wiring harness

Wires near the wheel well are chafed, broken, or corroded due to exposure.

3. Poor electrical connection

The connector at the sensor or control module is loose, dirty, or corroded.

4. Damaged tone ring

The reluctor ring on the axle or hub has missing teeth or excessive debris.

5. Blown circuit fuse

The fuse supplying power to the ABS sensor circuit has failed.

6. Failed ABS control module

Internal circuitry within the module is faulty, though this is rare compared to sensor issues.

How it's diagnosed

  1. Visually inspect the right front sensor wiring and connector for physical damage
  2. Measure sensor resistance and compare to manufacturer specifications
  3. Check for voltage supply at the sensor connector with ignition on
  4. Inspect the tone ring for damage while rotating the wheel by hand
  5. Test wiring continuity between the sensor connector and control module
  6. Monitor live wheel speed data to verify signal loss during operation

Code facts & related codes

SystemChassis
StandardizationSAE generic — identical on every make

Frequently asked

Is it safe to drive with this code?

Yes, standard braking works, but anti-lock features will not activate during emergency stops.

Should I replace the ABS computer for this code?

No, this fault is almost always the sensor or wiring, and replacing the computer is rarely the correct fix.

Can road debris cause this code?

Yes, metal shavings or mud on the sensor tip can interrupt the signal.

Will new tires fix this code?

No, this is an electrical or sensor fault, not a tire pressure or wear issue.