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C1233 Left Front Wheel Speed Sensor Signal Missing

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Left Front Wheel Speed Sensor Signal Missing, readable through chat.

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System
ABS / Traction Control
Component
Wheel speed sensor

Symptoms

  • ABS warning light on
  • Stability and traction control light on
  • Stability and traction control unavailable

Common causes

  • Wheel speed sensor damaged or dirty
  • Sensor wire chafed or pulled
  • Tone ring damaged, or wheel bearing and hub worn
  • Loose sensor mounting or corroded connector
  • Mismatched tire sizes or wrong tire pressure

Guides for this code

2006-2010 Ford Explorer parked in a garage
Diagnostics & Repair

C1233 on a 2006-2010 Ford Explorer: ABS Light, Causes, Fix

JC Landry · Oct 27, 2026

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Answers come from the factory manual for your make, model and year, with the page cited. Join the waitlist and we will email you when a spot opens up.