Fault code index · high
C1166
Wheel speed sensor RR - no signal / erratic
Wheel speed sensor RR - no signal / erratic
Applies to: All X-TYPE variants, 2001-2009 (saloon & estate) · Warning: ABS and/or DSC warning lamp · Default action: DSC/traction control disabled; ABS may be disabled (base brakes retained) · Confidence: Platform code set + documented X-TYPE failures
Common causes
- Excessive air gap
- Contaminated or cracked tone ring
- Wheel bearing play
Quick checks
- Scan access: Jaguar-specific: WDS/IDS or an ABS-capable scan tool
Typical fixes
- Check wheel bearing play
- Clean/replace tone ring
- Replace the sensor