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2011 JEEP GRAND CHEROKEE
3.6L V6 Pentastar•4WD•AUTOMATIC•gas
6 active safety recalls on this vehicle — view recalls
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Repairs0Labor506Torque1510Fluid10DTC1899Battery1Maintenance0Recalls6
C141Chigh severityChassis

Left Rear Wheel Speed Sensor Signal Erratic

on 2011 Jeep Grand Cherokee 3.6L V6 Pentastar · 4WD

What this code means

The ABS module sees an erratic or unstable signal from the left rear wheel speed sensor. Comparable to OBD P-code C0045. Unstable readings disable ABS/stability functions.

Symptoms

  • ABS light flickers or stays on
  • Erratic speedometer
  • Intermittent traction control drops

Common causes

  • Damaged tone ring/reluctor
  • Debris or metal on sensor tip
  • Excessive sensor air gap
  • Failing wheel speed sensor

Diagnostic steps

  1. Scan ABS module for codes
  2. Inspect tone ring for damage/debris
  3. Check sensor air gap and mounting
  4. View live sensor data while driving
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