C0174 - Understanding DTC C0174: Common Causes and Solutions for Chevrolet and GMC Vehicles

Quick Answer

C0174 means: DTC C0174 indicates a malfunction in the steering angle sensor circuit.

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

Can I drive with C0174? Immediate attention recommended to ensure safe vehicle operation.

Common Questions

What does C0174 mean and how does it affect my car?

DTC C0174 indicates a malfunction in the steering angle sensor circuit. This can greatly affect your vehicle's handling, as the sensor is crucial for stability control. If it’s not functioning properly, your car may not track correctly, especially in adverse conditions, leading to potential safety issues.

What are the most common causes of C0174 and how much does it cost to fix?

The most common causes include a faulty steering angle sensor and damaged wiring. Repair costs can range from $100 to $300 depending on the necessary repairs, including parts and labor.

Can I drive my car with C0174 or should I stop immediately?

While you may be able to drive your vehicle with C0174, it is not advisable. The steering issues could lead to loss of control, especially in challenging driving conditions. It's best to get it checked as soon as possible.

How can I diagnose C0174 myself using GeekOBD APP?

To diagnose C0174 using the GeekOBD APP, connect the app to your vehicle's OBD2 port. Run a diagnostic scan to retrieve the trouble codes and use the freeze frame data to analyze when the issue occurred. Check the steering angle sensor parameters to see if they are within normal ranges.

What vehicles are most commonly affected by C0174?

DTC C0174 is commonly found in 2007-2014 Chevrolet Silverado and 2010-2015 GMC Sierra models. These vehicles may have recalls or technical service bulletins addressing related issues, so always check with your dealer for updates.

How can I prevent C0174 from happening again?

Regular maintenance can help prevent C0174. Ensure that your vehicle's wiring is protected from moisture and wear, and consider periodic inspections of the steering components. Keeping the software updated can also prevent issues.

What is C0174?

DTC C0174 is a diagnostic trouble code that indicates a problem with the steering angle sensor circuit in selected vehicles, particularly those from Chevrolet and GMC. This code typically signifies that the steering angle sensor is not providing a valid signal to the vehicle's onboard computer, which can lead to issues with the stability control system and overall handling. When the steering angle sensor is malfunctioning, drivers may experience erratic steering behavior, a lit check engine light, or even diminished stability control capabilities. This can be particularly concerning as it impacts the vehicle's ability to maintain traction and stability during turns or slippery conditions. In practical terms, if you own a 2007-2014 Chevrolet Silverado or a 2010-2015 GMC Sierra, encountering this code could mean that the steering angle sensor or its wiring is faulty. Ignoring this issue can lead to further complications, including potential safety risks while driving. Therefore, addressing DTC C0174 promptly through proper diagnostics and repairs is crucial for maintaining vehicle safety and performance.

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

Symptoms

Common symptoms when C0174 is present:

  • The check engine light remains illuminated, indicating a fault in the steering angle sensor circuit.
  • Drivers may notice that the steering feels loose or unresponsive, particularly during turns, which can lead to a lack of control.
  • Fuel economy may decrease unexpectedly due to the vehicle's stability control system working harder to compensate for the faulty sensor.
  • Erratic dashboard warning lights, including stability control and traction control warnings, may appear as a result of this code.
  • In some cases, the vehicle may enter a limp mode, reducing power to prevent further damage.

Possible Causes

Most common causes of C0174 (ordered by frequency):

  1. The most common cause of DTC C0174 is a faulty steering angle sensor, which accounts for about 60% of cases. Signs of wear or internal failure can lead to incorrect readings.
  2. Another potential cause is damaged wiring in the sensor circuit. This can occur due to wear and tear, environmental exposure, or physical damage, with a likelihood of about 25%.
  3. Corroded or loose connections at the sensor can also trigger this code, emphasizing the importance of regular inspections to prevent issues before they arise.
  4. Less common but serious causes include a malfunctioning electronic control unit (ECU) that fails to process the sensor signal correctly, which can lead to significant repair costs.
  5. A rare but possible cause is software issues in the vehicle’s onboard computer, which may require a software update or reprogramming.

C0174 Repair Costs

Cost Breakdown by Repair Type

Steering Angle Sensor Replacement

Replacing the faulty steering angle sensor with a new OEM part.

  • Total: $150 - $300
  • Success rate: 90%
Wiring Repair

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

  • Total: $100 - $200
  • Success rate: 80%
ECU Reprogramming

Updating or reprogramming the electronic control unit if software issues are identified.

  • Total: $100 - $250
  • Success rate: 75%
Money-Saving Tips for C0174
  • 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 C0174 Diagnosis Process

Follow these systematic steps to accurately diagnose C0174. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Begin with an initial visual inspection of the steering angle sensor wiring and connectors for any visible damage or corrosion (5-10 minutes)

Step 1: Begin with an initial visual inspection of the steering angle sensor wiring and connectors for any visible 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 the GeekOBD APP to run an OBD2 scan and retrieve all stored codes, including freeze frame data to understand the context of the fault (10-15 minutes)

Step 2: Use the GeekOBD APP to run an OBD2 scan and retrieve all stored codes, including freeze frame data to understand the context of 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: Conduct component testing on the steering angle sensor using a multimeter to check for proper voltage and resistance readings (20-30 minutes)

Step 3: Conduct component testing on the steering angle sensor using a multimeter to check for proper voltage and resistance readings (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: Perform a system function test to verify that the steering angle sensor is operating correctly after any repairs and clear the codes (10-15 minutes)

Step 4: Perform a system function test to verify that the steering angle sensor is operating correctly after any repairs 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 driving conditions to ensure that the sensor is functioning correctly and that no codes reappear (15-20 minutes)

Step 5: Complete a road test under various driving conditions to ensure that the sensor is functioning correctly and that no codes reappear (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 2012 Chevrolet Silverado

Vehicle: 2012 Chevrolet Silverado 1500, 85,000 miles

Problem: Customer reported that the check engine light was on and the vehicle felt unstable during turns.

Diagnosis: Diagnostic showed code C0174. Visual inspection revealed corrosion at the sensor connector.

Solution: Replaced the steering angle sensor and cleaned the connector. Cleared the codes and performed a road test.

Cost: $280 (including parts and labor)

Result: The issue was resolved, and the customer reported improved steering response.

Case Study 2: Wiring Repair on a 2010 GMC Sierra

Vehicle: 2010 GMC Sierra 1500, 60,000 miles

Problem: Customer experienced erratic steering and warning lights on the dashboard.

Diagnosis: C0174 was present, and a detailed inspection revealed damaged wiring near the steering column.

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

Cost: $150 (for wiring repair)

Result: Steering became stable again, and all warning lights were cleared.

Diagnose C0174

Use GeekOBD APP for professional diagnosis!

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  • Professional-grade analysis
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Code Information

Code: C0174
System: Chassis (ABS, Steering, Suspension)
Severity: HIGH
Category: Chassis Codes