Chassis, generic

C0555 Left Front Wheel Speed Sensor A Incorrect Component Installed

Check engine lightOn
EmissionsNot relevant
Drive cycleRequired
Limp modePossible

The left front wheel speed signal is present, but the ABS module concludes that the part behind it is not the one it expects. Mitsubishi maps its code C1061-4A on the 2023 Outlander PHEV to C0555 and defines it as the front left sensor fitted in the wrong position; the module needs no more than 3 s to flag it, provided the sensor supply is intact, and the second affected drive brings on the MIL together with the ASC and ABS warnings. ABS, EBD, ASC, traction control, hill descent control and the electric parking brake function are suspended. One way a module can spot this: sensor ICs such as Allegro's A19302 report rotation direction, with forward defined by mounting orientation, so a sensor of the wrong variant or side reads the wheel as turning backwards. After replacing a sensor, check the part number before anything else.

Likely causes

Wrong sensor variant fitted (other side, other axle or passive instead of active)
Sensors or their connectors swapped between wheel positions
ABS control unit misjudges a correct sensor

Symptoms

  • ABS and ESC/ASC warning lamps on after a sensor or hub repair
  • Check-engine lamp on some models
  • Electric parking brake and hill descent control unavailable

Repair estimate

DifficultyEasyDIY possible
Parts and labour€30–250
Time0.3–1.5 h

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

Parts involved

wss lf

Related codes

C0556C0557C0558C0031C0500C0501

References: mitsubishitechinfo.com, allegromicro.com, hella.com.