Chassis, generic

C0080 Wheel Speed Mismatch (Front Axle)

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modePossible

Set when the two front wheel speed signals disagree by more than the allowed amount under conditions where they should match, pointing to a wheel-speed or tyre problem rather than a single open circuit. The ABS/ESC module continuously compares left and right front speeds; a persistent mismatch on a straight road can mean a failing sensor, a damaged tone ring, a mismatched or badly worn tyre or uneven inflation. Indirect-TPMS logic uses the same front-axle comparison to infer pressure loss, so this code and a low-pressure warning can share a root cause. ABS, traction and stability control may be limited and the ABS warning lamp is set while base braking remains. The entry follows the SAE J2012 generic definition and wheel-speed comparison diagnostics.

Likely causes

Mismatched, worn or unevenly inflated tyres
Failing sensor or damaged tone ring
Intermittent sensor wiring

Symptoms

  • ABS warning lamp on
  • Traction or stability control limited
  • Possible false low-pressure warning

Repair estimate

DifficultyMediumDIY possible
Parts and labour€0–500
Time0.3–2.5 h

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

Parts involved

wheel speed sensor flwheel speed sensor frtyres

Related codes

C0081C0078C0077

References: bosch-mobility.com, patents.google.com.