Chassis, generic

C065E Right Front Wheel Speed Sensor B Incorrect Component Installed

Check engine lightUsually off
EmissionsNot relevant
Drive cycleRequired
Limp modePossible

C065E means the module rejects the part fitted as the second speed sensor on the right front hub. Wheel speed sensors differ in their output scheme, and the receiving electronics are set up for one of them: TI's TPIC7218-Q1 is configured per sensor type, using two current thresholds for active sensors and four for VDA sensors that add 9 data bits. Allegro's A81415, a power management chip for electromechanical brakes, decodes two-level, PWM and three-level AK sensors, high-resolution versions included. Even within one family, Infineon sells the TLE5046SiC as an LR and an ERR variant in which bit 0 means air gap reserve in one case and an error flag in the other. Compare part numbers before suspecting the wiring; no carmaker documents C065E.

Likely causes

Replacement sensor with a different output protocol or variant
Single-channel sensor fitted where a dual-channel part belongs
Brake module not configured or coded for the fitted sensor

Symptoms

  • Warning appears soon after a sensor or hub replacement
  • Redundant braking or automated driving functions not available

Repair estimate

DifficultyEasyDIY possible
Parts and labour€60–400
Time0.3–1.5 h

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

Parts involved

rf wss b

Related codes

C0658C065DC0556C0657

References: ti.com, electronicsforu.com, infineon.com.