C0289

Code

Generic C — Chassis

Right Rear Wheel Speed Sensor Circuit Intermittent

Brand: Generic

Type: C — Chassis

Views: UK: 5 EN: 8 RU: 6

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Loose, corroded, or damaged connector or wiring harness at the right rear sensor
Chafed wiring or intermittent short to power/ground
Contaminated, damaged, or failing wheel speed sensor
Damaged or missing tone ring (reluctor) or excessive air gap
Faulty ABS module or internal connector fault
Intermittent wheel bearing or suspension play causing sensor movement

Scan ECU for C0289 and any other related ABS or communication codes; record freeze-frame/live data
Visually inspect right rear sensor, connector, and wiring for corrosion, damage, rubbing, or pinched sections
Backprobe the sensor connector and wiggle harness while watching live wheel speed data for intermittent changes
Inspect tone ring/reluctor for missing teeth, heavy rust, debris, or physical damage and check sensor air gap
Measure sensor resistance and compare to vehicle service data (or compare to opposite wheel as a reference)
Use an oscilloscope or multimeter to check for a clean wheel speed waveform while spinning the wheel

Passive (VR) sensor: AC sine-wave output increasing amplitude with wheel speed; low-speed output may be a few hundred millivolts to several volts RMS. Exact amplitude varies by design.
Active (Hall/LS) sensor: digital square/pulse signal referenced to 0–5 V (or 0–12 V on some systems) with frequency proportional to wheel speed.
Frequency: proportional to wheel rotational speed—should be steady and increase smoothly as wheel speed rises.
Resistance and supply specs vary by vehicle—consult service manual for exact ohms and pull-up voltage; compare right rear to left rear if unsure.

Retrieve and record ABS codes and freeze-frame. Note whether the fault is current or historic and whether other wheel speed codes exist.
Visually inspect the right rear sensor, tone ring, and wiring harness. Repair or secure any damaged shield or clips.
Backprobe the sensor connector. With ignition on (engine off), check reference power and ground (for active sensors) or continuity to ABS module.
Spin the wheel (jack up vehicle safely) and observe live wheel speed data on a scan tool while gently wiggling the harness/connector to reproduce the intermittent behavior.
Use a multimeter or oscilloscope to inspect the sensor waveform while spinning wheel. Look for dropouts, noise, or irregular amplitude.
If waveform or resistance is out of spec or intermittent, disconnect connector and inspect terminals. Clean or replace connector pins as needed.
Inspect tone ring for damage/debris and measure air gap. Replace tone ring or sensor if damaged or gap exceeds spec.
If wiring looks suspect between connector and ABS module, perform pin-to-pin resistance/continuity checks and inspect for intermittent shorts to chassis or power.
If wiring and sensor test good, check ABS module connectors and grounds. Consider module fault if communication or internal input is intermittent.
After repairs or replacements, clear codes and perform a road test to confirm the fault does not return and that wheel speed data is stable.