C0379 - Steering Wheel Position Sensor Circuit Malfunction on Common Vehicles

Quick Answer

C0379 means: C0379 indicates a problem with the steering wheel position sensor circuit.

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

Can I drive with C0379? Immediate attention is recommended to avoid steering issues.

Common Questions

What does C0379 mean and how does it affect my car?

C0379 indicates a malfunction in the steering wheel position sensor circuit, which can lead to steering issues and affect vehicle stability and safety. If left unaddressed, it can cause more severe problems, including difficulty controlling the vehicle.

What are the most common causes of C0379 and how much does it cost to fix?

The most common causes of C0379 include a faulty steering wheel position sensor, damaged wiring, or software issues. Repair costs can range from $75 for wiring repairs to $300 for sensor replacement.

Can I drive my car with C0379 or should I stop immediately?

It is advised to stop driving your vehicle if C0379 is present, as it may lead to steering instability, especially in emergency situations. Immediate diagnosis and repair are crucial.

How can I diagnose C0379 myself using GeekOBD APP?

To diagnose C0379 using the GeekOBD APP, connect the app to your vehicle's OBD2 port, perform a scan to retrieve the code, and check the freeze frame data to understand the vehicle's condition at the time of the fault.

What vehicles are most commonly affected by C0379?

Vehicles like the 2010-2015 Chevrolet Equinox and 2011-2016 GMC Terrain frequently experience C0379. It is prudent to check for any recalls or technical service bulletins (TSBs) related to the steering system for these models.

How can I prevent C0379 from happening again?

Regular maintenance, including inspections of the steering system and timely addressing of any warning lights, can help prevent C0379 from reoccurring. Keeping the vehicle’s electrical connections clean and secure is also crucial.

What is C0379?

The Diagnostic Trouble Code (DTC) C0379 indicates a malfunction in the steering wheel position sensor circuit. This code is commonly found in vehicles like the 2010-2015 Chevrolet Equinox and the 2011-2016 GMC Terrain. The steering wheel position sensor is crucial for various vehicle functions, including stability control and steering assistance. When this sensor fails or provides incorrect data, it can lead to erratic steering behavior, affecting vehicle handling and safety. For instance, your vehicle might exhibit a 'warning light' on the dashboard, or you may even notice that the steering feels loose or unresponsive. In some cases, a malfunctioning steering wheel position sensor can cause the electronic stability control (ESC) system to become inactive, which can be dangerous in adverse driving conditions. Therefore, addressing DTC C0379 promptly is essential to ensure safe vehicle operation. Ignoring this code could lead to more severe issues, including the complete failure of the power steering system or loss of vehicle stability, especially at higher speeds.

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

Symptoms

Common symptoms when C0379 is present:

  • The dashboard warning light illuminates, indicating a potential issue with the steering system.
  • Steering feels loose or unresponsive, making it difficult to control the vehicle, especially during turns.
  • The electronic stability control (ESC) system may become inactive, compromising vehicle stability.
  • Difficulty maintaining a straight line, causing the vehicle to drift unexpectedly, especially at higher speeds.
  • Unusual noises when turning the steering wheel, suggesting an underlying issue with the steering components.

Possible Causes

Most common causes of C0379 (ordered by frequency):

  1. The most common cause is a faulty steering wheel position sensor, which is responsible for sending data to the vehicle's computer. This accounts for approximately 60% of C0379 cases.
  2. Another frequent cause is damaged wiring or connectors in the sensor circuit, which can lead to intermittent signal loss.
  3. In some instances, the steering column itself may have issues, like misalignment or wear, leading to incorrect sensor readings. Regular inspections can help prevent such issues.
  4. Less commonly, software glitches in the vehicle's control module can trigger this code, requiring an update or reprogramming.
  5. A rare cause could be a complete failure of the power steering system due to a faulty pump or electric motor, which would present more severe symptoms.

C0379 Repair Costs

Cost Breakdown by Repair Type

Steering Wheel Position Sensor Replacement

Replacing the faulty steering wheel position sensor with a new unit.

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

Repairing any damaged wiring or connectors in the sensor circuit.

  • Total: $75 - $150
  • Success rate: 90%
Control Module Reprogramming

Updating or reprogramming the vehicle's control module if software issues are detected.

  • Total: $100 - $200
  • Success rate: 70%
Money-Saving Tips for C0379
  • 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 C0379 Diagnosis Process

Follow these systematic steps to accurately diagnose C0379. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Conduct an initial visual inspection - Check for damaged wiring, loose connectors, or corrosion that may affect the sensor circuit (5-10 minutes)

Step 1: Conduct an initial visual inspection - Check for damaged wiring, loose connectors, or corrosion that may affect the sensor circuit (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 perform an OBD2 scan - Retrieve all diagnostic trouble codes and freeze frame data to understand the context of C0379 (10-15 minutes)

Step 2: Use the GeekOBD APP to perform an OBD2 scan - Retrieve all diagnostic trouble codes and freeze frame data to understand the context of C0379 (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: Test the steering wheel position sensor and associated wiring using a multimeter to ensure proper voltage and continuity (20-30 minutes)

Step 3: Test the steering wheel position sensor and associated wiring using a multimeter to ensure 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: If necessary, perform a system function test to confirm the sensor is working correctly after any repairs (10-15 minutes)

Step 4: If necessary, perform a system function test to confirm the sensor is working correctly after any repairs (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: Conduct a road test under various driving conditions to confirm that the issue has been resolved (15-20 minutes)

Step 5: Conduct a road test under various driving conditions to confirm that the issue has been resolved (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 Wheel Sensor Replacement in a 2013 Chevrolet Equinox

Vehicle: 2013 Chevrolet Equinox, 85,000 miles

Problem: The customer reported the check engine light was on and the steering felt unresponsive.

Diagnosis: A scan revealed DTC C0379. Visual inspection showed damaged wiring to the steering wheel position sensor.

Solution: Replaced the damaged wiring and installed a new steering wheel position sensor.

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

Result: After repairs, the vehicle passed a road test with no further issues.

Case Study 2: Control Module Reprogramming in a 2015 GMC Terrain

Vehicle: 2015 GMC Terrain, 60,000 miles

Problem: Customer experienced intermittent steering issues with the check engine light illuminated.

Diagnosis: DTC C0379 was retrieved. Diagnostics indicated a software glitch in the control module rather than a hardware failure.

Solution: Performed a software update on the vehicle's control module.

Cost: $150 (parts: none, labor: $150)

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

Diagnose C0379

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: C0379
System: Chassis (ABS, Steering, Suspension)
Severity: HIGH
Category: Chassis Codes