OBD-II code · Chassis
C0506 Right Front Wheel Speed Sensor A Circuit/Open
Open circuit on right-front wheel speed sensor A. Wheel-speed signals feed ABS, ESC, traction control, transmission and odometer — a single dropped signal disables all of these safety functions until repaired.
Is it safe to drive with C0506?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyWire broken or connector unplugged
- Less likelyPin pushed back out of connector body
- Less likelyCracked solder joint inside the module or sensor
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2 h
- Emissions test
- Usually unaffected
- Parts involved
- Wss Rf, Sensor Wiring
Related codes
- C0658Right Front Wheel Speed Sensor B Circuit/Open
- C0503Left Front Wheel Speed Sensor A Circuit High
- C0504Left Front Wheel Speed Sensor A Intermittent/Erratic
- C0505ESC Switch Circuit
- C0507Right Front Wheel Speed Sensor A Range/Performance
- C0508Right Front Wheel Speed Sensor A Circuit Low
- C0509Right Front Wheel Speed Sensor A Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.