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C0659 — Right Front Wheel Speed Sensor B Rangeperformance

Generic OBD-II · all makesChassis

The C0659 code indicates that the right front wheel speed sensor is not reporting its speed within the expected range, affecting the ABS system.

Symptoms

What causes it — most likely first

1. Faulty right front wheel speed sensor

The sensor may have failed or be providing inaccurate readings, causing the range performance fault.

2. Damaged wiring or connector to the sensor

Corroded, broken, or loose wiring or connector can interrupt the signal and trigger the code.

3. Absence of wheel speed sensor signal due to mechanical issues

A damaged tone ring or debris preventing the sensor from detecting wheel rotation can cause range errors.

4. Faulty ABS control module

The module that processes wheel speed data may have a fault, though this is less common than sensor or wiring issues.

5. PCM (engine control module) malfunction

A PCM issue can affect wheel speed sensor interpretation, but this is rare and should be considered only after other causes are ruled out.

How it's diagnosed

  1. Verify the code using a scan tool and check for related ABS or traction control codes.
  2. Inspect the wiring and connector for the right front wheel speed sensor for damage, corrosion, or loose pins.
  3. Measure sensor resistance and signal voltage while rotating the wheel to confirm proper operation.
  4. Visually inspect the sensor and tone ring for physical damage or debris.
  5. If wiring and sensor are sound, test the ABS control module for proper signal processing and replace only if confirmed faulty.

Code facts & related codes

SystemChassis
StandardizationSAE generic — identical on every make

Frequently asked

Can I fix this by replacing the PCM?

Replacing the PCM is rarely necessary; most issues are resolved by repairing or replacing the wheel speed sensor, its wiring, or connector.

Is this code related to the brake system?

Yes, it pertains to the ABS sensor that monitors wheel speed for brake and stability systems.

Will this cause the ABS light to illuminate?

The ABS warning light will typically illuminate when this fault is detected.

Do I need to reset the code after repair?

Yes, after correcting the underlying issue, the code must be cleared with a scan tool to verify the repair.