C0823 - Understanding the Steering Angle Sensor Error in 2015-2020 Chevrolet and GMC Models

Quick Answer

C0823 means: C0823 indicates a malfunction with the steering angle sensor, affecting vehicle stability and control.

Fix: Check and replace faulty components Cost: $150 - $300 Time: 90-180 minutes

Can I drive with C0823? Immediate attention is recommended to ensure safe vehicle operation.

Common Questions

What does C0823 mean and how does it affect my car?

C0823 indicates a malfunction with the steering angle sensor, which can lead to poor steering responsiveness and decreased stability control. Ignoring this issue could compromise your safety, especially in critical driving situations.

What are the most common causes of C0823 and how much does it cost to fix?

The most common cause is a faulty steering angle sensor, which can cost between $150 and $300 to replace. Other causes include wiring issues and incorrect sensor calibration, which may cost less but still require immediate attention.

Can I drive my car with C0823 or should I stop immediately?

While you might be able to drive short distances, it is not advisable to ignore this code. The steering and stability control issues could worsen, leading to dangerous driving conditions.

How can I diagnose C0823 myself using GeekOBD APP?

Start by connecting the GeekOBD APP to your vehicle's OBD2 port. Use the app to scan for codes, view live data from the steering angle sensor, and check for any related codes that could give you a clearer picture of the issue.

What vehicles are most commonly affected by C0823?

C0823 is frequently seen in 2015-2020 Chevrolet Silverado and GMC Sierra models, but it can also affect other GM vehicles within this range. Check for any recalls or technical service bulletins that may relate to your vehicle.

How can I prevent C0823 from happening again?

Regular maintenance, including inspections of the steering system and timely repairs of any related components, can help prevent C0823. Keeping the vehicle’s software up to date and ensuring proper calibration after repairs also significantly reduces the risk.

What is C0823?

The diagnostic trouble code C0823 indicates a malfunction related to the steering angle sensor, particularly in vehicles made by General Motors, including popular models like the Chevrolet Silverado and GMC Sierra between the years 2015 to 2020. The steering angle sensor is a critical component that measures the angle of the steering wheel and communicates this information to the vehicle's Electronic Stability Control (ESC) system. When the C0823 code is triggered, it typically means that the sensor is either malfunctioning or that there is a communication error within the vehicle's control modules. This can lead to issues with steering responsiveness and stability control, impacting overall vehicle safety. Symptoms associated with this code may include erratic steering behavior, illuminated warning lights, and poor handling during driving. If left unaddressed, a malfunctioning steering angle sensor can lead to decreased vehicle control, especially in slippery conditions, making it imperative for car owners to diagnose and repair this issue promptly.

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

Symptoms

Common symptoms when C0823 is present:

  • The check engine light or stability control warning light may illuminate on the dashboard, signaling an issue.
  • Drivers may experience unusual steering behavior, such as a lack of responsiveness or oversteering during turns.
  • In some cases, the vehicle may exhibit decreased stability control performance, particularly during emergency maneuvers or on slippery roads.
  • There might be a noticeable difference in the steering feel, leading to difficulty maintaining a straight line when driving.
  • The vehicle's traction control system may also activate unexpectedly, causing sudden braking or reduced acceleration.

Possible Causes

Most common causes of C0823 (ordered by frequency):

  1. The most common cause of C0823 is a faulty steering angle sensor, which occurs in about 60% of cases. This can happen due to wear and tear or electrical issues.
  2. Another common cause is poor connections or damaged wiring related to the steering angle sensor; this accounts for roughly 25% of cases, often due to corrosion or physical damage.
  3. Incorrect calibration of the steering angle sensor can also trigger this code, usually after a repair or replacement of steering components; this is often a simple fix.
  4. Less common but serious causes include issues with the vehicle's ESC module or problems within the power steering system, which may require more extensive diagnostics.
  5. A rare but possible cause could be software glitches in the vehicle's control modules, which may sometimes require a software update or reprogramming.

C0823 Repair Costs

Cost Breakdown by Repair Type

Steering Angle Sensor Replacement

Replacing a faulty steering angle sensor to resolve C0823 code.

  • Total: $150 - $300
  • Success rate: 85%
Wiring Repair or Replacement

Repairing or replacing damaged wiring or connectors related to the steering angle sensor.

  • Total: $100 - $200
  • Success rate: 75%
Calibration Service

Calibrating the steering angle sensor after installation or repair.

  • Total: $50 - $100
  • Success rate: 90%
Money-Saving Tips for C0823
  • 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 C0823 Diagnosis Process

Follow these systematic steps to accurately diagnose C0823. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Conduct an initial visual inspection of the steering column wiring and connectors for any obvious damage or corrosion (5-10 minutes)

Step 1: Conduct an initial visual inspection of the steering column wiring and connectors for any obvious damage or corrosion (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 with the GeekOBD APP to read the C0823 code and retrieve any associated codes or freeze frame data for context (10-15 minutes)

Step 2: Use an OBD2 scanner with the GeekOBD APP to read the C0823 code and retrieve any associated codes or freeze frame data for context (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 steering angle sensor with a multimeter to check for proper voltage and signal output (20-30 minutes)

Step 3: Perform component testing on the steering angle sensor with a multimeter to check for proper voltage and signal output (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: If repairs are made, conduct a system function test to ensure the sensor is operating correctly and clear the codes (10-15 minutes)

Step 4: If repairs are made, conduct a system function test to ensure the sensor is operating correctly and clear the codes (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: Complete a road test under various conditions to validate that the steering and stability control systems are functioning as intended (15-20 minutes)

Step 5: Complete a road test under various conditions to validate that the steering and stability control systems are functioning as intended (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: Steering Angle Sensor Replacement in a 2018 Chevrolet Silverado

Vehicle: 2018 Chevrolet Silverado, 45,000 miles

Problem: Customer reported unstable steering and illuminated stability control warning light.

Diagnosis: Diagnostic scan revealed C0823 code, indicating a faulty steering angle sensor.

Solution: Replaced steering angle sensor and calibrated it using the GeekOBD APP.

Cost: $250 (includes parts and labor)

Result: Steering responsiveness improved, and warning lights cleared successfully.

Case Study 2: Wiring Repair for C0823 Code in a 2017 GMC Sierra

Vehicle: 2017 GMC Sierra, 50,000 miles

Problem: Customer noticed erratic steering behavior and check engine light.

Diagnosis: Visual inspection revealed damaged wiring harness connected to the steering angle sensor.

Solution: Repaired wiring and recalibrated the sensor using OBD2 tools.

Cost: $180 (including parts and labor)

Result: Vehicle handling restored, with no further issues reported.

Diagnose C0823

Use GeekOBD APP for professional diagnosis!

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  • Professional-grade analysis
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Code Information

Code: C0823
System: Chassis (ABS, Steering, Suspension)
Severity: HIGH
Category: Chassis Codes