AutoCodes – Buick – C0298 Buick

C0298 Buick Code - Powertrain Control Module Indicates Traction Control Malfunction

Quick Answer

The Electronic Brake Control Module (EBCM) and the Powertrain Control Module (PCM) simultaneously control the traction control. Common causes include Faulty Electronic Brake Control Module (EBCM), Faulty Powertrain Control Module (PCM), EBCM harness is open or shorted. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: C0298 Buick indicates Powertrain Control Module Indicates Traction Control Malfunction.
Common causes: Common causes include Faulty Electronic Brake Control Module (EBCM), Faulty Powertrain Control Module (PCM), EBCM harness is open or shorted.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 4,958

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 18, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0298 Buick Description

The Electronic Brake Control Module (EBCM) and the Powertrain Control Module (PCM) simultaneously control the traction control. The EBCM sends a Requested Torque message via a pulse width modulated (PWM) signal to the PCM. The duty cycle of the signal is used to determine how much engine torque the EBCM is requesting the PCM to deliver. Normal values are between 10 and 90 percent duty cycle. The signal should be at 90 percent when traction control is not active and at lower values during traction control activations. The PCM supplies the pull up voltage that the EBCM switches to ground to create the signal.

OBDII Code C0298 Buick - Powertrain Control Module Indicates Traction Control Malfunction - AutoCodes.com — C0298 Buick Code - Powertrain Control Module Indicates Traction Control Malfunction

What does this mean?

What are the Possible Causes of the DTC C0298 Buick?

Faulty Electronic Brake Control Module (EBCM)
Faulty Powertrain Control Module (PCM)
EBCM harness is open or shorted
EBCM circuit poor electrical connection

How to Fix the DTC C0298 Buick?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C0298 Buick code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about C0298 Buick Code

1. What does the OBDII code C0298 mean for a Buick?

C0298 indicates that the Powertrain Control Module (PCM) has detected a malfunction in the traction control system.

2. What are common symptoms of the C0298 code in a Buick?

Symptoms may include the traction control warning light turning on, reduced traction on slippery surfaces, and possible activation of limp mode.

3. What causes the C0298 code in a Buick?

Common causes include faulty wheel speed sensors, damaged wiring, a malfunctioning traction control module, or issues with the Powertrain Control Module (PCM).

4. Can I drive my Buick with the C0298 code?

While the vehicle may still be drivable, the traction control system may not function properly, potentially compromising safety in slippery or low-traction conditions.

5. How do I diagnose the C0298 code in my Buick?

Diagnosis typically involves scanning for additional trouble codes, inspecting the wheel speed sensors, checking for damaged wiring, and testing the traction control system components.

6. How do I fix the C0298 code in a Buick?

Repairs may include replacing faulty wheel speed sensors, repairing or replacing damaged wiring, or reprogramming or replacing the traction control module or PCM.

7. How much does it cost to fix the C0298 code on a Buick?

The cost depends on the specific issue, ranging from $100 to $300 for sensor replacements to $500 or more for module repairs or replacements.

8. Can a low battery cause the C0298 code in a Buick?

Yes, a low or failing battery can sometimes cause electrical issues that may trigger the C0298 code.

9. How can I prevent the C0298 code from recurring in my Buick?

Regular maintenance, including inspecting the traction control system and addressing any warning lights promptly, can help prevent this code from recurring.

10. Does the C0298 code affect other vehicle systems?

Yes, since the traction control system is integrated with the ABS and PCM, the malfunction may impact braking or engine performance.