C0223 - Brake Switch Circuit Malfunction (Common in 2006-2012 Chevrolet Impala and 2007-2011 GMC Acadia)

Quick Answer

C0223 means: DTC C0223 indicates a malfunction in the brake switch circuit, affecting brake light signaling and ABS functionality.

Fix: Check and replace faulty components Cost: $80 - $150 Time: 90-180 minutes

Can I drive with C0223? Address immediately to ensure safe braking operation and avoid potential accidents.

Common Questions

What does C0223 mean and how does it affect my car?

DTC C0223 indicates a malfunction in the brake switch circuit, which can prevent brake lights from functioning and disrupt ABS operations. This affects overall vehicle safety, making it essential to address the issue promptly to maintain safe braking performance.

What are the most common causes of C0223 and how much does it cost to fix?

Common causes include a faulty brake switch, corroded wiring, and blown fuses, with repair costs typically ranging from $80 to $200 depending on the specific issue and parts needed.

Can I drive my car with C0223 or should I stop immediately?

Driving with C0223 is not advisable as it can compromise braking efficiency and safety. It's crucial to address the issue immediately to avoid potential accidents.

How can I diagnose C0223 myself using GeekOBD APP?

To diagnose C0223 using the GeekOBD APP, connect the device to your vehicle's OBD2 port, run a complete scan, and check for codes related to the brake switch. Follow the app's instructions for further diagnostics and troubleshooting.

What vehicles are most commonly affected by C0223?

Commonly affected vehicles include the 2006-2012 Chevrolet Impala, 2007-2011 GMC Acadia, and other GM models from the same era. It's advisable to check for any recalls or Technical Service Bulletins (TSBs) related to this issue.

How can I prevent C0223 from happening again?

Regular maintenance, including visual inspections of the brake system and electrical connections, can help prevent issues with the brake switch. Keeping the brake system clean and free of corrosion can also extend the life of the components.

What is C0223?

The Diagnostic Trouble Code (DTC) C0223 indicates a malfunction in the brake switch circuit. This code is often triggered when the brake switch, which is responsible for signaling the brake light and various safety systems, fails to operate as expected. This malfunction can impact the vehicle's anti-lock braking system (ABS) and traction control, leading to decreased safety and performance. When the vehicle's computer detects an issue with the brake switch circuit, it will log this code and potentially illuminate the check engine light on the dashboard. For car owners, this means that not only might your brake lights not work properly, but you could also face issues with your ABS, which is crucial for maintaining control during sudden stops. If left unaddressed, the problems associated with C0223 could lead to more severe braking issues and unsafe driving conditions. Additionally, many vehicle models, especially those manufactured by General Motors during the late 2000s, report this issue frequently, emphasizing the need for timely diagnostics and repairs to ensure safety and reliability on the road.

System: C - Chassis (ABS, Steering, Suspension)

Symptoms

Common symptoms when C0223 is present:

  • The check engine light remains illuminated, indicating a fault in the brake switch or circuit.
  • Brake lights may not function properly, either staying on constantly or not illuminating when the brake pedal is pressed.
  • You may experience a lack of traction control or ABS functionality, especially in slippery conditions, leading to potential loss of vehicle control.
  • Unusual noises from the brake system when the vehicle is in motion, which can indicate a malfunctioning brake switch.
  • Inconsistent or delayed braking response, which can occur if the brake switch fails to send proper signals to the vehicle's computer.

Possible Causes

Most common causes of C0223 (ordered by frequency):

  1. The most common cause of C0223 is a faulty brake switch, which has a likelihood of around 60%. Over time, the switch can wear out, leading to electrical failures.
  2. Another common cause is corroded wiring or poor connections within the brake switch circuit, accounting for approximately 20% of cases. This can create intermittent failures that trigger the code.
  3. A third potential cause is a blown fuse related to the brake switch, which can easily be checked and replaced. Regular inspections of fuses can help prevent this issue.
  4. Less common but serious causes include issues with the vehicle's body control module (BCM) that manages the brake system, which may require professional diagnostics.
  5. A rare cause could be software glitches in the vehicle's computer system, which may necessitate a software update from the manufacturer.

C0223 Repair Costs

Cost Breakdown by Repair Type

Brake Switch Replacement

Replacing the faulty brake switch with an OEM part to restore proper functionality.

  • Total: $80 - $150
  • Success rate: 90%
Wiring Repair

Repairing or replacing damaged wiring and connectors in the brake switch circuit.

  • Total: $50 - $120
  • Success rate: 85%
Body Control Module Reprogramming

Reprogramming or updating the vehicle's BCM to resolve software-related issues.

  • Total: $100 - $200
  • Success rate: 75%
Money-Saving Tips for C0223
  • Start with the most common and least expensive repairs first
  • Use GeekOBD APP to confirm diagnosis before replacing expensive parts
  • Consider preventive maintenance to avoid future occurrences
  • Compare prices for OEM vs aftermarket parts based on your needs
  • Address the issue promptly to prevent more expensive secondary damage

Diagnostic Steps

Professional C0223 Diagnosis Process

Follow these systematic steps to accurately diagnose C0223. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Conduct an initial visual inspection, looking for damaged wiring, loose connections, or corrosion on the brake switch and its connectors (5-10 minutes)

Step 1: Conduct an initial visual inspection, looking for damaged wiring, loose connections, or corrosion on the brake switch and its connectors (5-10 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 2: Step 2: Use an OBD2 scanner, such as the GeekOBD APP, to retrieve all stored codes and freeze frame data, providing context for the fault (10-15 minutes)

Step 2: Use an OBD2 scanner, such as the GeekOBD APP, to retrieve all stored codes and freeze frame data, providing context for the fault (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 3: Step 3: Perform component testing on the brake switch using a multimeter to measure resistance and continuity, confirming if the switch is functioning properly (20-30 minutes)

Step 3: Perform component testing on the brake switch using a multimeter to measure resistance and continuity, confirming if the switch is functioning properly (20-30 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 4: Step 4: Conduct a system function test after any repairs to ensure that the brake switch is operating correctly and clear any codes from the system (10-15 minutes)

Step 4: Conduct a system function test after any repairs to ensure that the brake switch is operating correctly and clear any codes from the system (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 5: Step 5: Finally, perform a road test under various conditions to confirm the successful repair and ensure the vehicle is safe for driving (15-20 minutes)

Step 5: Finally, perform a road test under various conditions to confirm the successful repair and ensure the vehicle is safe for driving (15-20 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.

Important Notes

  • Always verify the repair with GeekOBD APP after completing diagnostic steps
  • Clear codes and test drive to ensure the problem is resolved
  • Address underlying causes to prevent code recurrence

Real Repair Case Studies

Case Study 1: Brake Switch Replacement on 2008 Chevrolet Impala

Vehicle: 2008 Chevrolet Impala, 75,000 miles

Problem: Customer reported the check engine light was on, and brake lights were not functioning correctly.

Diagnosis: Diagnostic testing revealed DTC C0223. A multimeter test confirmed that the brake switch was faulty.

Solution: Replaced the brake switch with an OEM part, ensuring proper connections were made.

Cost: $120 (parts: $50, labor: $70)

Result: After the repair, the check engine light was cleared, and the brake lights functioned correctly.

Case Study 2: Wiring Repair on 2010 GMC Acadia

Vehicle: 2010 GMC Acadia, 85,000 miles

Problem: The driver experienced intermittent braking issues and noticed the ABS light was illuminated.

Diagnosis: OBD2 scanning revealed C0223. A visual inspection showed signs of corrosion on the brake switch wiring.

Solution: Repaired the damaged wiring and replaced corroded connectors in the brake switch circuit.

Cost: $100 (parts: $30, labor: $70)

Result: Post-repair, the ABS light was off and braking performance was restored.

Diagnose C0223

Use GeekOBD APP for professional diagnosis!

  • Real-time data monitoring
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  • Step-by-step repair guidance
  • Professional-grade analysis
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Code Information

Code: C0223
System: Chassis (ABS, Steering, Suspension)
Severity: HIGH
Category: Chassis Codes