C1223 Cadillac Code - Left Rear Wheel Speed Sensor Input Signal Is Zero
Quick Answer
As the wheel spins, the wheel speed sensor produces an AC signal. Common causes include 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. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- C1223 Cadillac indicates Left Rear Wheel Speed Sensor Input Signal Is Zero.
- Common causes
- Common causes include 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.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code C1223 Cadillac Description
What are the Possible Causes of the DTC C1223 Cadillac?
- 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
How to Fix the DTC C1223 Cadillac?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C1223 Cadillac code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about C1223 Cadillac Code
1. What does the OBDII code C1223 mean on a Cadillac?
C1223 indicates that the left rear wheel speed sensor is not sending a signal to the ABS module, meaning the sensor input is zero.
2. What are the common symptoms of code C1223 on a Cadillac?
Common symptoms include the ABS warning light or traction control light turning on, reduced ABS functionality, and possible loss of traction control performance.
3. What causes the C1223 code to appear on a Cadillac?
The code can be caused by a faulty left rear wheel speed sensor, damaged wiring or connectors, a malfunctioning ABS module, or debris obstructing the sensor.
4. Can I still drive my Cadillac with a C1223 code?
Yes, you can drive the vehicle, but the ABS and traction control systems may not function properly, increasing the risk of reduced stability and braking performance.
5. How do I diagnose the C1223 code on my Cadillac?
Diagnose the code by inspecting the left rear wheel speed sensor, checking for damaged wiring or loose connections, and using a scan tool to monitor sensor data.
6. How do I fix the C1223 code on a Cadillac?
Repairs may include replacing the faulty wheel speed sensor, repairing damaged wiring or connectors, cleaning debris from the sensor, or reprogramming or replacing the ABS module if necessary.
7. How much does it cost to fix the C1223 code on a Cadillac?
Repair costs vary, but replacing a wheel speed sensor typically costs between $100 and $300, while ABS module repairs or replacement could be more expensive.
8. Can a dirty or damaged wheel hub cause the C1223 code?
Yes, a dirty or damaged wheel hub can interfere with the wheel speed sensor’s ability to read the wheel’s rotation, triggering the code.
9. Do I need special tools to troubleshoot the C1223 code?
A scan tool capable of reading ABS codes and live data is recommended, along with basic tools to inspect and replace the sensor or wiring.
10. Will clearing the code fix the C1223 issue on a Cadillac?
Clearing the code may temporarily turn off the warning light, but the underlying issue must be resolved to prevent the code from returning.
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