Chassis, generic

C0659 Right Front Wheel Speed Sensor B Range/Performance

Check engine lightUsually off
EmissionsNot relevant
Drive cycleRequired
Limp modePossible

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or by 15 km/h where a wheel that is not turning could cause a false alarm; how quickly a B channel gets rated remains unpublished, and no carmaker documents C0659.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.

Likely causes

Air gap too large from wheel bearing play or a loose sensor holder
Encoder ring dirty, cracked or weakened
Unsuitable replacement sensor

Symptoms

  • Warning for brake or driver assistance system, often only while driving
  • Automated functions withdrawn while ABS on sensor A continues

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€60–700
Time0.5–3 h

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

Parts involved

rf wss btone ring

Related codes

C0658C065CC065DC0507C0652

References: infineon.com, mlit.go.jp.