C0026moderate severityChassis

RF Wheel Speed Sensor Circuit Intermittent

on 1999 Porsche 911 Carrera 3.4L H6 · RWD

What this code means

The right front wheel speed sensor signal drops out intermittently.

Symptoms

  • Intermittent ABS light
  • Sporadic traction control engagement
  • ABS function unpredictable

Common causes

  • Wiring flexing near steering knuckle
  • Connector corrosion
  • Sensor loosening over time
  • Harness chafing on suspension

Diagnostic steps

  1. Wiggle test at connector and along harness
  2. Check connector pin tension
  3. Verify sensor mounting torque
  4. Monitor live data during road test

Repair notes

Repair chafed wiring or replace connector. Secure sensor mounting.

Other Chassis codes on this vehicle

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