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C1242 Buick Code - Pump Motor Circuit Open

Quick Answer

The C1242 Buick code indicates that there is an open circuit in the pump motor. Common causes include Damaged or corroded wiring in the pump motor circuit, Faulty pump motor relay, Defective ABS control module. 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
C1242 Buick indicates Pump Motor Circuit Open.
Common causes
Common causes include Damaged or corroded wiring in the pump motor circuit, Faulty pump motor relay, Defective ABS control module.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 08, 2024
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Code C1242 Buick Description

The C1242 Buick code indicates that there is an open circuit in the pump motor. This means that there is a break or interruption in the electrical connection within the pump motor circuit. The pump motor is a crucial component in the vehicle's braking system, particularly in vehicles equipped with anti-lock braking systems (ABS). When the pump motor circuit is open, it can lead to issues with the ABS system, potentially compromising the vehicle's braking performance and safety.

OBDII Code C1242 Buick - Pump Motor Circuit Open
C1242 Buick Code - Pump Motor Circuit Open

Common Causes of C1242 Buick

  1. Damaged or corroded wiring in the pump motor circuit
  2. Faulty pump motor relay
  3. Defective ABS control module
  4. Loose or disconnected electrical connectors
  5. Issues with the ABS pump motor itself

Symptoms of C1242 Buick

  1. Illuminated ABS warning light on the dashboard
  2. Increased stopping distances
  3. ABS system not engaging during braking
  4. Unusual noises coming from the ABS pump motor
  5. Loss of traction control functionality

How to Fix C1242 Buick

  1. Begin by diagnosing the specific cause of the open circuit in the pump motor circuit using a diagnostic scanner and multimeter.
  2. Inspect the wiring and connectors for any signs of damage or corrosion. Repair or replace any damaged components.
  3. Test the pump motor relay and replace it if it is faulty.
  4. Check the ABS control module for any issues and replace if necessary.
  5. Finally, test the ABS system to ensure that the pump motor circuit is functioning properly.

Cost to Fix C1242 Buick

The typical repair costs for addressing a C1242 Buick code can vary depending on the specific cause of the issue and the extent of the repairs needed. On average, the cost of parts and labor for this type of repair can range from $200 to $500. However, it's important to note that prices can vary significantly based on factors such as location, vehicle make and model, and the shop's labor rates. It's recommended to obtain quotes from local auto repair shops for a more accurate estimate.

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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 C1242 Buick Code

1. What are common symptoms of OBDII code C1242 in a Buick related to the Pump Motor Circuit Open?

- Common symptoms include the ABS warning light illuminating on the dashboard, loss of ABS functionality, and potential issues with the vehicle's stability control system.

2. What are the possible causes of the Pump Motor Circuit Open OBDII code in a Buick?

- The code C1242 can be triggered by a malfunctioning ABS pump motor, damaged wiring or connectors in the circuit, or a faulty ABS control module.

3. How can I diagnose the cause of the Pump Motor Circuit Open OBDII code in my Buick?

- Diagnosing the issue may involve conducting a visual inspection of the wiring and connectors, testing the ABS pump motor, and using a diagnostic scanner to retrieve specific fault codes.

4. Can I still drive my Buick with the C1242 code for Pump Motor Circuit Open?

- It is not recommended to drive the vehicle with the ABS warning light on, as this indicates a potential safety issue with the ABS system. It's best to address the problem promptly.

5. What are some repair tips for fixing the Pump Motor Circuit Open issue in a Buick?

- Repairing the C1242 code may involve replacing the ABS pump motor, repairing damaged wiring or connectors, or reprogramming the ABS control module, depending on the root cause.

6. Is it possible to reset the OBDII code C1242 in a Buick without addressing the underlying issue?

- While clearing the fault code may temporarily turn off the warning light, the issue causing the code will persist, and the ABS system may still be compromised. It's crucial to fix the root problem.

7. How much does it typically cost to repair the Pump Motor Circuit Open OBDII code in a Buick?

- Repair costs can vary depending on the specific cause of the issue, but it's advisable to budget for potential expenses related to parts replacement, labor, and diagnostic tests.

8. Can a DIY enthusiast without specialized tools fix the C1242 code in a Buick?

- Some aspects of diagnosing and repairing the issue may be challenging without proper tools and expertise. It's recommended to consult a qualified mechanic for accurate diagnosis and repair.

9. Will the C1242 code for Pump Motor Circuit Open trigger a check engine light in a Buick?

- The C1242 code is related to the ABS system and may not always trigger the check engine light. However, the ABS warning light will illuminate to indicate an issue with the system.

10. How long does it take to resolve the Pump Motor Circuit Open issue in a Buick?

- The repair time can vary based on the specific cause of the problem and the availability of parts. Some repairs may be completed within a few hours, while more complex issues may take longer to fix.

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