AutoCodes – Pontiac – C1227 Pontiac

C1227 Pontiac Code - Left Rear Excessive Wheel Speed Variation

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
C1227 Pontiac indicates Left Rear Excessive Wheel Speed Variation.
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.
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Code Popularity 1,862
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 27, 2020
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Code C1227 Pontiac 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 C1227 Pontiac - Left Rear Excessive Wheel Speed Variation - AutoCodes.com
C1227 Pontiac Code - Left Rear Excessive Wheel Speed Variation

What are the Possible Causes of the DTC C1227 Pontiac?

  • 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 C1227 Pontiac?

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 C1227 Pontiac 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.

Need more information about the C1227 Pontiac code?

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Need Help with the Code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about C1227 Pontiac Code

1. What are the common symptoms of OBDII code C1227 in a Pontiac?

The common symptoms of OBDII code C1227 in a Pontiac include ABS warning light illuminated on the dashboard, traction control system malfunctions, and potential loss of stability control.

2. What does the OBDII code C1227 indicate in a Pontiac?

OBDII code C1227 in a Pontiac indicates Left Rear Excessive Wheel Speed Variation, signaling a disparity in wheel speed between the left rear wheel and other wheels of the vehicle.

3. What are the possible causes of OBDII code C1227 in a Pontiac?

Possible causes of OBDII code C1227 in a Pontiac can include faulty wheel speed sensors, damaged wheel bearings, wiring issues, or problems with the ABS module.

4. How can I diagnose OBDII code C1227 in my Pontiac?

Diagnosing OBDII code C1227 in a Pontiac involves using a diagnostic scanner to retrieve the trouble codes, testing the wheel speed sensors, inspecting the wiring harness, and checking for any physical damage to the left rear wheel components.

5. Is it safe to drive my Pontiac with OBDII code C1227 present?

It is not recommended to drive your Pontiac with OBDII code C1227 present, as it can affect the vehicle's stability control system and compromise safety on the road. It is best to address the issue promptly.

6. Can I reset the OBDII code C1227 in my Pontiac without fixing the underlying issue?

Resetting the OBDII code C1227 in your Pontiac without addressing the underlying issue will only temporarily clear the code. The problem will likely reoccur, and it is important to diagnose and repair the issue to prevent further issues.

7. How can I repair OBDII code C1227 in my Pontiac?

Repairing OBDII code C1227 in your Pontiac may involve replacing a faulty wheel speed sensor, repairing damaged wiring, replacing wheel bearings, or addressing issues with the ABS module. It is recommended to consult a professional mechanic for proper diagnosis and repair.

8. Can weather conditions affect OBDII code C1227 in a Pontiac?

Extreme weather conditions such as heavy rain, snow, or ice can potentially affect wheel speed sensors and trigger OBDII code C1227 in a Pontiac. It is essential to ensure proper maintenance and inspection of the vehicle's components.

9. Will OBDII code C1227 cause drivability issues in my Pontiac?

While OBDII code C1227 itself may not directly cause drivability issues, it can impact the vehicle's stability control system and ABS functionality, leading to potential handling issues and compromised safety while driving.

10. How much does it typically cost to repair OBDII code C1227 in a Pontiac?

The cost to repair OBDII code C1227 in a Pontiac can vary depending on the underlying issue, parts needed for replacement, and labor costs. It is advisable to obtain estimates from reputable mechanics or service centers for an accurate cost assessment.

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