C0659 code meaning
Right Front Wheel Speed Sensor B Range/Performance
What C0659 means
The second right front speed signal arrives, but its quality or value does not fit. For sensors using the VDA AK protocol, Infineon's TLE5046SiC shows what a module can read besides speed: a 3-bit air gap gauge and, in one variant, a reserve bit that is set once the magnetic signal drops below twice the value at the limit air gap. A weakening signal thus becomes visible before pulses are lost. UN Regulation 13-H requires ABS sensor anomalies that cannot be seen at standstill to be detected by 10 km/h, or by 15 km/h where a wheel that is not turning could cause a false alarm; how quickly a B channel gets rated remains unpublished, and no carmaker documents C0659. Likely causes: too large an air gap from bearing play or a loose holder, a dirty or damaged encoder, a wrong sensor.
C0659 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.5 to 3 hours
- Clears after repairAfter a drive cycle
Symptoms of C0659
- Warning for brake or driver assistance system, often only while driving
- Automated functions withdrawn while ABS on sensor A continues
Common causes of C0659
- Most likelyAir gap too large from wheel bearing play or a loose sensor holder
- PossibleEncoder ring dirty, cracked or weakened
- Less likelyUnsuitable replacement sensor
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Rf wss bTone ring
What each part of C0659 means
| C | Chassis system: brakes, ABS, steering and suspension. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 59 | The exact fault in that area. |
What to do next
- Note C0659 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about C0659
What does C0659 mean?
C0659 means "Right Front Wheel Speed Sensor B Range/Performance". The second right front speed signal arrives, but its quality or value does not fit. It is a generic code, so it means the same on every make.
Is it safe to drive with C0659?
Drive gently and only to a workshop. With C0659 the car can go into limp mode (reduced power) to protect itself.
Will C0659 fail an emissions test?
C0659 is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is C0659 to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will C0659 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.