C047B - Understanding DTC C047B: What It Means for Your 2015-2018 Chevrolet Silverado

Quick Answer

C047B means: C047B indicates a problem with the steering angle sensor circuit, affecting vehicle stability.

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

Can I drive with C047B? Immediate attention is recommended to avoid safety risks while driving.

Common Questions

What does C047B mean and how does it affect my car?

C047B indicates an issue with the steering angle sensor circuit. This can affect your car's stability, making it harder to steer. Long-term neglect of this issue can lead to more severe steering and control problems.

What are the most common causes of C047B and how much does it cost to fix?

Common causes include a faulty steering angle sensor, damaged wiring, or software issues in the ECU. Repair costs typically range from $150 to $300, depending on the specific issue.

Can I drive my car with C047B or should I stop immediately?

It's best not to drive with this code present, as it can compromise your vehicle's handling and safety. Immediate attention is recommended.

How can I diagnose C047B myself using GeekOBD APP?

You can use the GeekOBD APP to scan for codes, view freeze frame data, and perform a system function test. This can help pinpoint the issue before seeking repairs.

What vehicles are most commonly affected by C047B?

This code is commonly found in 2015-2018 Chevrolet Silverado and GMC Sierra models, among others. Be sure to check for any recalls related to the steering system.

How can I prevent C047B from happening again?

Regular maintenance of your vehicle's electrical system and ensuring that connections are clean and secure can help prevent future occurrences of this code.

What is C047B?

The Diagnostic Trouble Code (DTC) C047B refers specifically to a fault in the steering angle sensor circuit. This code is commonly found in vehicles such as the 2015-2018 Chevrolet Silverado and GMC Sierra. The steering angle sensor is crucial for various vehicle systems, including traction control and electronic stability control. When this code is triggered, it indicates that the steering angle sensor is not communicating properly with the vehicle's onboard computer, which can lead to issues with steering response and stability. In practical terms, this means that the vehicle may experience erratic handling, an unresponsive steering wheel, or even a constant warning light on the dashboard. Ignoring this code can result in more significant issues down the line, such as compromised safety during turns or sudden loss of control. Therefore, it’s essential to address this issue promptly to ensure safe driving and maintain the integrity of the vehicle’s electronic systems.

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

Symptoms

Common symptoms when C047B is present:

  • Check engine light remains illuminated, indicating a persistent issue with the steering system.
  • Steering responsiveness may fluctuate, resulting in a feeling of looseness or tightness in the steering wheel.
  • The vehicle's traction control light may activate unexpectedly during normal driving conditions.
  • Possible erratic steering behavior, making it difficult to maintain a straight path while driving.
  • In extreme cases, the vehicle may enter 'limp mode,' limiting speed and power output for safety.

Possible Causes

Most common causes of C047B (ordered by frequency):

  1. The most common cause is a malfunctioning steering angle sensor, which occurs in approximately 60% of cases. This can be due to wear and tear or electrical failure.
  2. A second common cause is damaged wiring or loose connections within the steering sensor circuit, which can disrupt communication with the vehicle's computer.
  3. A third potential cause is software issues within the vehicle's electronic control unit (ECU), which could require a software update or reset to resolve.
  4. Less commonly, this code may be triggered by a faulty ABS module, which can complicate the vehicle's braking and stability systems.
  5. A rare but possible cause is the presence of corrosion or moisture in the sensor connectors, which can lead to intermittent faults.

C047B Repair Costs

Cost Breakdown by Repair Type

Steering Angle Sensor Replacement

Replacing the faulty steering angle sensor to restore proper function.

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

Repairing damaged wiring or connections in the steering angle sensor circuit.

  • Total: $75 - $150
  • Success rate: 90%
Money-Saving Tips for C047B
  • 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 C047B Diagnosis Process

Follow these systematic steps to accurately diagnose C047B. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion (5-10 minutes)

Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, 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: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes)

Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault 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: Component testing - Use a multimeter to test the steering angle sensor for proper voltage and continuity (20-30 minutes)

Step 3: Component testing - Use a multimeter to test the steering angle sensor for proper voltage and continuity (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: System function test - Verify proper operation after repairs and clear codes using the GeekOBD APP (10-15 minutes)

Step 4: System function test - Verify proper operation after repairs and clear codes using the GeekOBD APP (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: Road test verification - Drive the vehicle under various conditions to confirm repair success and check for any reoccurring codes (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and check for any reoccurring codes (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 2017 Chevrolet Silverado

Vehicle: 2017 Chevrolet Silverado 1500, 45,000 miles

Problem: Customer reported a persistent check engine light and unstable steering during turns.

Diagnosis: Upon scanning with the GeekOBD APP, C047B was retrieved, indicating a faulty steering angle sensor.

Solution: Replaced the steering angle sensor and cleared the codes.

Cost: $250 (parts: $150, labor: $100)

Result: Post-repair road test confirmed restoration of normal steering function and no reoccurring codes.

Case Study 2: Wiring Repair in a 2016 GMC Sierra

Vehicle: 2016 GMC Sierra 1500, 60,000 miles

Problem: Customer noticed the traction control light was frequently blinking, along with a check engine light.

Diagnosis: Diagnostic code C047B indicated a sensor issue. Further inspection revealed damaged wiring in the circuit.

Solution: Repaired the damaged wiring and ensured all connections were secure.

Cost: $125 (parts: $25, labor: $100)

Result: After repairs, the vehicle performed well with no warning lights or steering issues.

Diagnose C047B

Use GeekOBD APP for professional diagnosis!

  • Real-time data monitoring
  • Advanced diagnostic features
  • Step-by-step repair guidance
  • Professional-grade analysis
Download GeekOBD APP Get MOBD Adapter

Code Information

Code: C047B
System: Chassis (ABS, Steering, Suspension)
Severity: HIGH
Category: Chassis Codes