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C1223 GMC Code - Left Rear Wheel Speed Sensor Input Signal Is Zero

- Code Popularity: 1,889 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC C1223 GMC?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Hub Assembly (Left Rear Wheel Speed Sensor is part of hub assembly)
  • Faulty Left Rear Wheel Speed Sensor
  • Left Rear Wheel Speed Sensor harness is open or shorted
  • Left Rear Wheel Speed Sensor circuit poor electrical connection
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How to Fix the DTC C1223 GMC?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C1223 GMC code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

Code C1223 GMC 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 C1223 GMC - Left Rear Wheel Speed Sensor Input Signal Is Zero - AutoCodes.com
C1223 GMC Code - Left Rear Wheel Speed Sensor Input Signal Is Zero

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Code C1223 GMC comments

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