C0874 - DTC C0874 - Understanding the Traction Control System Malfunction in GM Vehicles

Quick Answer

C0874 means: C0874 indicates a traction control system malfunction, particularly in GM vehicles.

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

Can I drive with C0874? Immediate attention is recommended to maintain vehicle safety and performance.

Common Questions

What does C0874 mean and how does it affect my car?

C0874 indicates a traction control system malfunction, which can severely impact your vehicle's handling and safety. If the TCS fails, you may experience loss of traction, leading to potential skidding or difficulty controlling the vehicle on slippery surfaces.

What are the most common causes of C0874 and how much does it cost to fix?

Common causes include faulty wheel speed sensors (approximately $150 - $300 to replace) and a malfunctioning traction control module (around $400 - $800). Regular diagnostics can help identify issues early, potentially saving on repair costs.

Can I drive my car with C0874 or should I stop immediately?

While you can drive the vehicle with C0874, it's not recommended, especially in wet or slippery conditions. The traction control system is crucial for maintaining vehicle stability, so it’s best to address the issue promptly.

How can I diagnose C0874 myself using GeekOBD APP?

Using the GeekOBD APP, you can perform an OBD2 scan to retrieve the C0874 code and any related codes. Check the freeze frame data for conditions when the code was triggered, and inspect the wheel speed sensors and their wiring for any visible issues.

What vehicles are most commonly affected by C0874?

C0874 is commonly seen in 2014-2018 models of Chevrolet Silverado and GMC Sierra, as well as other GM vehicles equipped with traction control systems. It's advisable to check for any recalls or Technical Service Bulletins (TSBs) related to your specific vehicle.

How can I prevent C0874 from happening again?

Regular vehicle maintenance, including checking the brake system and inspecting the wiring and connectors for the traction control system, can help prevent C0874. Additionally, addressing any warning signs promptly can mitigate the risk of future failures.

What is C0874?

DTC C0874 is a diagnostic trouble code that indicates a malfunction in the traction control system (TCS) of a vehicle, particularly affecting models from General Motors (GM) like the Chevrolet Silverado and GMC Sierra from 2014 to 2018. This code is typically triggered when the TCS detects that the system is not functioning properly, which can lead to a loss of traction during acceleration or when driving on slippery surfaces. The traction control system is designed to help prevent wheel spin and maintain stability by applying brake force to the wheels that are slipping. When the system malfunctions, it can result in decreased vehicle control and safety, especially in adverse weather conditions. Drivers might notice the traction control warning light illuminated on the dashboard, and they may also experience less responsive handling or unexpected skidding. Ignoring this code can lead to more significant safety issues and vehicle damage. Therefore, it's essential to address DTC C0874 promptly to ensure the vehicle's traction control system is working as intended.

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

Symptoms

Common symptoms when C0874 is present:

The traction control warning light is illuminated on the dashboard, indicating a potential issue with the system.
The vehicle may experience unpredictable skidding, especially during acceleration on wet or slippery roads, making it challenging to maintain control.
Drivers might notice reduced acceleration performance, as the system may not respond when needed for traction assistance.
Unusual noise from the brakes when the traction control engages, such as a grinding or clunking sound, which can indicate a malfunction.
The vehicle may struggle to start in icy conditions, as the TCS may not effectively manage wheel spin.

Possible Causes

Most common causes of C0874 (ordered by frequency):

{'cause': 'Faulty wheel speed sensors (40% likelihood)', 'details': 'These sensors monitor the speed of each wheel, and if they fail or provide inaccurate readings, the TCS may not function correctly.'}
{'cause': 'Malfunctioning traction control module (30% likelihood)', 'details': 'The TCS module processes information from the wheel speed sensors. If this module is damaged, it can trigger the C0874 code.'}
{'cause': 'Wiring issues (20% likelihood)', 'details': 'Damaged or corroded wiring can disrupt communication between the TCS components, leading to system failure. Regular inspections can help prevent this.'}
{'cause': 'Brake system issues (5% likelihood)', 'details': 'Problems with the brakes, such as a failing ABS pump, can affect TCS functionality. Addressing brake issues promptly can help maintain TCS effectiveness.'}
{'cause': 'Rare software glitches (5% likelihood)', 'details': 'In some cases, software malfunctions can trigger this code. Updating the vehicle’s software can resolve such issues.'}

C0874 Repair Costs

Cost Breakdown by Repair Type

Wheel Speed Sensor Replacement

Replacing faulty wheel speed sensors to restore TCS functionality.

Total: $150 - $300
Success rate: 90%

Traction Control Module Replacement

Replacing the traction control module if it is confirmed faulty.

Total: $400 - $800
Success rate: 85%

Money-Saving Tips for C0874

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 C0874 Diagnosis Process

Follow these systematic steps to accurately diagnose C0874. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Initial visual inspection - Check for damaged wiring or loose connections around the wheel speed sensors and traction control module (5-10 minutes)

Step 1: Initial visual inspection - Check for damaged wiring or loose connections around the wheel speed sensors and traction control module (5-10 minutes).