C0519Right Front Wheel Speed Sensor - Mechanical
- Generic OBD-II code · Chassis
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- 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.
- What you may notice
- ABS lamp and stability service message
- ABS may regulate unexpectedly at walking pace
- Likely causes
- LikelyMetal debris or rust buildup on the right front reluctor ring
- PossibleSensor not fully seated or bracket bent, air gap too large
- PossibleRight front hub bearing worn
- Repair
- Medium · Often possible to do yourself.Typical cost: €0 – €500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.