AutoCodes - OBDII Code List - C1221 CADILLAC

C1221 CADILLAC - Left Front Wheel Speed Sensor Input Signal Is Zero

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3    What is this?
Table of contents

C1221 CADILLAC Possible Causes

  • Faulty Hub Assembly (Left Front Wheel Speed Sensor is part of hub assembly)
  • Faulty Left Front Wheel Speed Sensor
  • Left Front Wheel Speed Sensor harness is open or shorted
  • Left Front Wheel Speed Sensor circuit poor electrical connection

How do I fix code C1221 CADILLAC?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
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Cost of diagnosing the C1221 CADILLAC code

Labor: 1.0

The cost of diagnosing the C1221 CADILLAC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

  • Anti-Lock Brake System (ABS) Warning Light ON
  • Engine Light ON (or Service Engine Soon Warning Light)

C1221 CADILLAC Description

As the wheel spins, the wheel speed sensor produces an AC signal. The Electronic Brake Control Module (EBCM) uses the frequency of the AC signal to calculate the wheel speed. The EBCM will set the OBDII code when the sensor is not to factory specifications.
OBDII Code C1221 Cadillac - Left Front Wheel Speed Sensor Input Signal Is Zero - AutoCodes.com

More Information

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