Engine-Codes.com
Engine-Codes – GMC – C1220 2014 GMC Sierra

C1220 2014 GMC Sierra Code - Brake Pressure Sensor Supply Voltage Circuit High

Quick Answer

The C1220 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates a problem with the brake pressure sensor supply voltage circuit being too high. Common causes include Faulty brake pressure sensor, Damaged wiring or connectors in the sensor circuit, Malfunctioning ABS control module. 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
C1220 2014 GMC Sierra indicates Brake Pressure Sensor Supply Voltage Circuit High.
Common causes
Common causes include Faulty brake pressure sensor, Damaged wiring or connectors in the sensor circuit, Malfunctioning ABS control module.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code C1220 2014 GMC Sierra Description

The C1220 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates a problem with the brake pressure sensor supply voltage circuit being too high. The brake pressure sensor is a crucial component of the vehicle's anti-lock braking system (ABS), responsible for monitoring the hydraulic pressure in the brake system. When the sensor detects that the supply voltage is higher than normal, it can lead to issues with the ABS functionality, potentially affecting the vehicle's braking performance and safety.

OBDII Code C1220 2014 GMC Sierra - Brake Pressure Sensor Supply Voltage Circuit High
C1220 2014 GMC Sierra Code - Brake Pressure Sensor Supply Voltage Circuit High

Common Causes of C1220 2014 GMC Sierra

  1. Faulty brake pressure sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. Malfunctioning ABS control module
  4. Corrosion or contamination in the sensor connections
  5. Electrical issues such as a short circuit or voltage spike

Symptoms of C1220 2014 GMC Sierra

  1. Illumination of the ABS warning light on the dashboard
  2. ABS system becoming non-responsive or engaging unexpectedly
  3. Decreased braking performance or longer stopping distances
  4. Unusual noises or vibrations during braking
  5. Difficulty maintaining control of the vehicle during braking maneuvers

How to Fix C1220 2014 GMC Sierra

  1. Begin by conducting a visual inspection of the brake pressure sensor, wiring, and connectors for any signs of damage or corrosion.
  2. Use a multimeter to test the voltage output of the brake pressure sensor and compare it to the manufacturer's specifications.
  3. Scan the ABS system for fault codes and address any additional related issues.
  4. Replace the faulty brake pressure sensor, repair damaged wiring, or replace the ABS control module as needed.
  5. Clear the DTC and perform a road test to ensure proper ABS functionality and brake performance.

Cost to Fix C1220 2014 GMC Sierra

The typical repair costs for addressing a C1220 DTC on a 2014 GMC Sierra can vary depending on the specific cause of the issue and the required repairs. In general, replacing a faulty brake pressure sensor can range from $100 to $300, while addressing wiring or connector issues may add to the total cost. Labor rates at auto repair shops typically range from $80 to $150 per hour, with additional charges for diagnostic time and parts. It is advisable to consult with a qualified mechanic or service center for a more accurate cost estimate based on the specific circumstances of the vehicle.

Need more information about the C1220 2014 GMC Sierra code?

Need more information on how to fix the C1220 2014 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1220 2014 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

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 C1220 2014 GMC Sierra Code

1. What are common symptoms of OBDII code C1220 in a 2014 GMC Sierra related to the Brake Pressure Sensor Supply Voltage Circuit High?

Common symptoms include the ABS warning light illuminating on the dashboard, reduced braking performance, and potential activation of the vehicle's limp mode.

2. What are the possible causes of OBDII code C1220 in a 2014 GMC Sierra?

The code C1220 in a 2014 GMC Sierra is often triggered by issues such as a faulty brake pressure sensor, damaged wiring in the brake pressure sensor circuit, or a malfunctioning ABS module.

3. How can I diagnose the Brake Pressure Sensor Supply Voltage Circuit High issue in my 2014 GMC Sierra?

To diagnose the problem, you can use an OBDII scanner to read the trouble codes, inspect the brake pressure sensor and its wiring for any visible damage, and perform a comprehensive check of the ABS system components.

4. Are there any DIY repair tips for resolving OBDII code C1220 in a 2014 GMC Sierra?

While some basic troubleshooting like checking and cleaning the sensor connectors or resetting the ABS system may help, resolving the C1220 code often requires professional diagnostic tools and expertise to pinpoint and address the underlying issue effectively.

5. Can driving with OBDII code C1220 in a 2014 GMC Sierra be dangerous?

Continuing to drive with the C1220 code present can compromise the vehicle's braking system functionality, potentially leading to safety risks such as longer stopping distances or loss of ABS assistance in emergency braking situations. It is advisable to address the issue promptly.

6. How much does it typically cost to repair OBDII code C1220 in a 2014 GMC Sierra?

The cost of repairing the Brake Pressure Sensor Supply Voltage Circuit High issue can vary depending on the specific cause, parts needed for replacement, labor rates, and whether you choose to have the repair done at a dealership or an independent auto repair shop.

7. Is it necessary to reset the OBDII code C1220 after repairing the issue in a 2014 GMC Sierra?

Yes, it is recommended to clear the trouble codes using an OBDII scanner after resolving the C1220 problem to reset the ABS system and ensure that the warning light does not reappear due to a stored fault code.

8. Can extreme weather conditions affect the occurrence of OBDII code C1220 in a 2014 GMC Sierra?

Extreme temperatures or moisture exposure can potentially exacerbate existing issues related to the brake pressure sensor circuit, leading to the triggering of the C1220 code in your 2014 GMC Sierra.

9. How long does it typically take to repair the Brake Pressure Sensor Supply Voltage Circuit High issue in a 2014 GMC Sierra?

The repair time for addressing the C1220 code can vary based on the complexity of the problem, availability of parts, and the expertise of the technician. It is advisable to consult with a professional for a more accurate estimate.

10. Can a DIY enthusiast with basic automotive knowledge fix OBDII code C1220 in a 2014 GMC Sierra?

While some simple troubleshooting steps can be attempted by DIY enthusiasts, resolving the Brake Pressure Sensor Supply Voltage Circuit High issue often requires specialized tools and expertise. It is recommended to seek professional help for an effective and safe repair.

Discuss the causes and fixes for C1220 2014 GMC Sierra OBDII Code

Submit a New Comment

Code C1220 2014 GMC Sierra comments

No comments found for this page.