C0293 - ABS Control Module Communication Error in 2007-2015 Chevrolet Silverado and GMC Sierra

Quick Answer

C0293 means: C0293 indicates an ABS control module communication error.

Fix: Check and replace faulty components Cost: $400 - $800 Time: 90-180 minutes

Can I drive with C0293? Immediate attention recommended to ensure safe braking functionality.

Common Questions

What does C0293 mean and how does it affect my car?

C0293 refers to an ABS control module communication error, which can severely affect your braking system's performance. If this code appears, it may indicate potential issues with your ABS system, which is crucial for maintaining control during sudden stops. Ignoring this code could compromise your safety, making it imperative to get it diagnosed and repaired.

What are the most common causes of C0293 and how much does it cost to fix?

The most common causes include a faulty ABS control module, damaged wiring, or a malfunctioning wheel speed sensor. Repair costs can vary significantly depending on the specific issue, with ABS module replacements ranging from $400 to $800 and wiring repairs costing between $100 to $300.

Can I drive my car with C0293 or should I stop immediately?

While you may be able to drive your vehicle, it's not advisable to ignore the C0293 code. Doing so can lead to decreased braking performance and increased risk of accidents, especially in emergency situations. It's best to have the problem diagnosed and repaired as soon as possible.

How can I diagnose C0293 myself using GeekOBD APP?

To diagnose C0293 using the GeekOBD APP, first connect the device to your vehicle’s OBD2 port. Scan for trouble codes and check for any related codes that may provide additional context. Use the freeze frame data to see the vehicle conditions at the time of the fault, and inspect the ABS system components accordingly.

What vehicles are most commonly affected by C0293?

C0293 is commonly found in vehicles like the 2007-2015 Chevrolet Silverado and GMC Sierra. Other models from GM during this period may also experience this issue, so it's essential to stay informed about any recalls or technical service bulletins related to the ABS system.

How can I prevent C0293 from happening again?

Regular maintenance is key to preventing C0293. Ensure your vehicle undergoes routine inspections of the ABS system, including checking wiring and sensors for wear. Keeping your vehicle clean and free from moisture can also help reduce the risk of electrical failures.

What is C0293?

DTC C0293 is a diagnostic trouble code that indicates a communication error with the Anti-lock Braking System (ABS) control module. This code typically arises when there’s a disruption in the data transmission between the ABS control module and the vehicle's Powertrain Control Module (PCM). When this happens, the ABS system may not function correctly, leading to potential safety issues, especially during abrupt braking. This code is commonly found in vehicles like the 2007-2015 Chevrolet Silverado and GMC Sierra, among others. The implications of a C0293 code can range from decreased braking performance to the illumination of the ABS warning light on the dashboard, which can be alarming for drivers. If left unchecked, this issue can compromise the safety of the vehicle, increasing the risk of accidents. It's crucial for vehicle owners to address this code promptly by consulting a qualified technician, who can conduct a thorough diagnostic process and repair any underlying issues. Understanding what causes this error code and its effects on vehicle performance can empower drivers to take necessary actions for their safety and their vehicle’s reliability.

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

Symptoms

Common symptoms when C0293 is present:

  • The ABS warning light is illuminated on the dashboard, indicating a malfunction within the anti-lock braking system.
  • The brakes may feel less responsive during emergency stops, making it difficult to maintain control in slippery conditions.
  • Drivers might experience a pulsation in the brake pedal during normal braking, indicating the ABS system is trying to engage improperly.
  • Inconsistent brake performance where the vehicle may skid or slide more easily than usual.
  • The traction control system may also be disabled, further complicating vehicle handling in adverse weather.

Possible Causes

Most common causes of C0293 (ordered by frequency):

  1. The most common cause of a C0293 code is a faulty ABS control module, with a likelihood of about 40%. This can happen due to electrical issues, internal failures, or exposure to moisture.
  2. Another frequent cause is damaged or corroded wiring harnesses connecting the ABS module to the PCM. These issues can occur due to wear and tear, leading to intermittent communication failures.
  3. A third possible cause is a malfunctioning wheel speed sensor, which can prevent the ABS system from receiving necessary data for proper operation. Regular inspections can help identify issues early.
  4. Less commonly, a failed PCM can also lead to this code, which is more serious and often requires extensive diagnostic work.
  5. In very rare cases, software glitches in the ABS module's firmware can cause communication errors, which may necessitate a software update or reprogramming.

C0293 Repair Costs

Cost Breakdown by Repair Type

ABS Control Module Replacement

Replacing the faulty ABS control module.

  • Total: $400 - $800
  • Success rate: 80%
Repair Damaged Wiring

Repairing or replacing damaged wiring and connectors.

  • Total: $100 - $300
  • Success rate: 90%
Wheel Speed Sensor Replacement

Replacing a malfunctioning wheel speed sensor if identified as the cause.

  • Total: $150 - $250
  • Success rate: 85%
Money-Saving Tips for C0293
  • 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 C0293 Diagnosis Process

Follow these systematic steps to accurately diagnose C0293. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Perform an initial visual inspection of the ABS module and wiring for any visible damage or corrosion (5-10 minutes)

Step 1: Perform an initial visual inspection of the ABS module and wiring 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 scan the vehicle’s OBD2 system and retrieve all stored codes and freeze frame data for context (10-15 minutes)

Step 2: Use the GeekOBD APP to scan the vehicle’s OBD2 system and retrieve all stored codes and 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: Test the ABS control module using a multimeter to check for proper voltage and ground connections (20-30 minutes)

Step 3: Test the ABS control module using a multimeter to check for proper voltage and ground connections (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: Conduct a system function test to ensure the ABS operates correctly after repairs and clear any stored trouble codes (10-15 minutes)

Step 4: Conduct a system function test to ensure the ABS operates correctly after repairs and clear any stored trouble 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: Perform a road test under various conditions to confirm the effectiveness of the repairs and ensure the ABS is functioning properly (15-20 minutes)

Step 5: Perform a road test under various conditions to confirm the effectiveness of the repairs and ensure the ABS is functioning properly (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: ABS Control Module Replacement on 2010 Chevrolet Silverado

Vehicle: 2010 Chevrolet Silverado 1500, 85,000 miles

Problem: Customer reported persistent ABS warning light and decreased braking performance during hard stops.

Diagnosis: Using the GeekOBD APP, the code C0293 was retrieved, indicating a communication error with the ABS control module. Visual inspection revealed corrosion on the module's connectors.

Solution: Replaced the ABS control module and repaired the damaged wiring. Cleared codes and performed a road test to confirm ABS functionality.

Cost: $650 (parts: $400 for the module, $200 for labor, $50 for wiring repairs)

Result: Customer reported the ABS warning light was off, and braking performance was restored.

Case Study 2: Wiring Repair on 2013 GMC Sierra

Vehicle: 2013 GMC Sierra 1500, 60,000 miles

Problem: Driver experienced intermittent ABS light and sporadic brake behavior.

Diagnosis: After scanning with GeekOBD APP, C0293 was found along with additional codes for wheel sensors. Inspection revealed frayed wiring near the ABS module.

Solution: Repaired the damaged wiring and ensured proper connections. Verified system functionality and cleared codes.

Cost: $250 (parts: $50 for wiring, $200 for labor)

Result: ABS functionality was restored, and the driver reported no further issues.

Diagnose C0293

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Code Information

Code: C0293
System: Chassis (ABS, Steering, Suspension)
Severity: HIGH
Category: Chassis Codes