AutoCodes – Pontiac – C0242 Pontiac

C0242 Pontiac Code - Engine Control Module Indicated Traction Control Malfunction

Quick Answer

The Electronic Brake Control Module (EBCM) and the Engine Control Module (ECM) simultaneously control the traction control. Common causes include Faulty Electronic Brake Control Module (EBCM), EBCM Harness is open or shorted, EBCM Circuit poor electrical connection. 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: C0242 Pontiac indicates Engine Control Module Indicated Traction Control Malfunction.
Common causes: Common causes include Faulty Electronic Brake Control Module (EBCM), EBCM Harness is open or shorted, EBCM Circuit poor electrical connection.
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 8,431

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Jun 28, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0242 Pontiac Description

The Electronic Brake Control Module (EBCM) and the Engine Control Module (ECM) simultaneously control the traction control. The Electronic Brake Control Module sends a serial data message to the Engine Control Module requesting torque reduction. When certain Engine Control Module DTCs are set, the Engine Control Module will not be able to perform the torque reduction for traction control. A serial data message is sent to the Electronic Brake Control Module indicating that traction control is not allowed. The Diagnostic Trouble Code (DTC) engine control module detects a fault that prevents it from performing a traction control function and sends a serial data message to the electronic brake control module indicating that torque reduction is not allowed.

OBDII Code C0242 Pontiac - Engine Control Module Indicated Traction Control Malfunction - AutoCodes.com — C0242 Pontiac Code - Engine Control Module Indicated Traction Control Malfunction

What does this mean?

What are the Possible Causes of the DTC C0242 Pontiac?

Faulty Electronic Brake Control Module (EBCM)
EBCM Harness is open or shorted
EBCM Circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC C0242 Pontiac?

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 C0242 Pontiac 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 C0242 Pontiac Code

1. What does the OBDII code C0242 mean on a Pontiac?

C0242 indicates that the Engine Control Module (ECM) has detected a malfunction in the traction control system, which could affect vehicle stability.

2. What are the common symptoms of the C0242 code in a Pontiac?

Symptoms may include the traction control warning light or ABS light illuminating, reduced traction or stability performance, and possible engine power reduction.

3. What causes the C0242 code to appear?

Common causes include a faulty ECM, communication issues between the ECM and other modules, damaged wiring or connectors, or a malfunctioning traction control system component.

4. Can driving with the C0242 code damage my Pontiac?

Driving with this code can reduce traction and stability, especially in adverse conditions, but itâ€™s unlikely to cause immediate damage to the vehicle if addressed promptly.

5. How do I diagnose the C0242 code on my Pontiac?

Diagnosis typically involves scanning for additional codes, inspecting wiring and connectors between the ECM and traction control system, and testing the ECM and related components for proper functionality.

6. How do I fix the C0242 code on a Pontiac?

Repairs may include replacing damaged wiring, repairing faulty connectors, updating or reprogramming the ECM, or replacing a malfunctioning traction control system component.

7. Can a bad wheel speed sensor trigger the C0242 code?

A faulty wheel speed sensor is not a direct cause of C0242 but could contribute to traction control issues that might lead to this code being set.

8. Is it expensive to fix the C0242 code on a Pontiac?

Repair costs vary depending on the specific issue, ranging from minor wiring repairs to ECM replacement, which can be more expensive.

9. Can clearing the C0242 code solve the problem?

Clearing the code may temporarily remove the warning light, but the issue will likely return unless the root cause is addressed.

10. Should I take my Pontiac to a professional for the C0242 code?

If youâ€™re unfamiliar with diagnosing and repairing advanced vehicle systems, itâ€™s best to have a professional technician handle the issue to ensure proper repairs.