Chassis, generic

C0519 Right Front Wheel Speed Sensor - Mechanical

Check engine lightUsually off
EmissionsNot relevant
Drive cycleRequired
Limp modePossible

C0519 is the mechanical-fault code for the right front sensor. It appears in code lists, but no manufacturer publishes a setting rule for it; the known diagnostics put such faults under range, erratic or correlation codes. What goes wrong mechanically at a front wheel is documented in GM bulletin PIT5707: on 2020 Silverado and Sierra HD trucks, manufacturing debris on the reluctor ring set C0504 or C050A, and the cure was cleaning the ring without a magnet, sometimes with the front hub removed. Allegro explains why geometry matters at all: the magnetic field reaching a Hall sensor weakens steeply as the air gap grows, so a sensor that is not fully seated, a bent bracket or bearing play can leave the signal too weak to read.

Likely causes

Metal debris or rust buildup on the right front reluctor ring
Sensor not fully seated or bracket bent, air gap too large
Right front hub bearing worn

Symptoms

  • ABS lamp and stability service message
  • ABS may regulate unexpectedly at walking pace

Repair estimate

DifficultyMediumDIY possible
Parts and labour€0–500
Time0.3–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

wss rftone ring rf

Related codes

C0518C051AC051BC0507C050AC0556

References: static.nhtsa.gov, allegromicro.com, bosch-mobility.com.